Cache La Poudre River

Division 1 · Water District 3 · As of 2026-08-26 10:58 MDT

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Cache La Poudre River on the ground — the ditches, wells, reservoirs and gages of Water District 3 · clicktap anything for its record

Snowpack — no snow on the ground at 4 SNOTEL sites — normal for the date; the snow year begins in October and typically peaks around April 17. Runoff outlook — Cache La Poudre R at Canyon Mouth: even odds of at least 87 kAF over 06-01 to 09-30 — 51% of a normal season, per NRCS, issued 2026-06-01 — the season’s final; new forecasts begin in January. Full snow & runoff picture — charts, forecast history and how the forecasts have verified →

Sites, exceedance bands and sources

SNOTEL site	Elev (ft)	SWE (in)	% of median	Typical peak
Black Mountain	8940	0.0	—	April 17 (12.5 in)
Deadman Hill	10240	0.0	—	May 4 (21.8 in)
Hourglass Lake	9380	0.2	—	April 19 (13.0 in)
Long Draw Resv	9980	0.1	—	April 27 (18.3 in)

Cache La Poudre R at Canyon Mouth — 06-01 to 09-30 volume, thousand acre-feet (chance the volume is AT LEAST this):

90%	70%	50%	30%	10%	Normal
68	79	87	96	110	169

Snow-water equivalent and medians (1991–2020) from NRCS SNOTEL; seasonal volume forecasts from the NRCS National Water and Climate Center. Sites and forecast points are assigned to the district whose boundary contains them — snowpack that feeds this district can also sit in a neighboring headwater district. Toggle the Snow chip on the map above to see the sites.

Topology cross-check: 10 parent disagreements, 20 sizable streams not on this network (vs DWR's route framework — under review)

This flow network was built mechanically; DWR's Source Water Route Framework disagrees with it in the places below. Each row is a question a human reviewer has not yet answered — not an error verdict. Checked 26 streams, 16 agree. Know this water? Tell us →

Stream	This site routes it to	DWR routes it to
Sheep Creek	the mainstem	North Fork Cache La Poudre River
Fish Creek	the mainstem	Dale Creek
Trail Creek	the mainstem	North Fork Cache La Poudre River
Rabbit Creek	the mainstem	North Fork Cache La Poudre River
Lone Pine Creek	the mainstem	North Fork Cache La Poudre River
South Lone Pine Creek	the mainstem	Lone Pine Creek
North Lone Pine Creek	the mainstem	Lone Pine Creek
Manhattan Creek	the mainstem	Elkhorn Creek

Sizable streams DWR maps here that this network does not carry:

Coalbank Creek (24 mi) · Fossil Creek (16 mi) · Owl Creek (11 mi) · Bennett Creek (11 mi) · Joe Wright Creek (11 mi) · The Slough (10 mi) · Spring Creek (8 mi) · Lewstone Creek (8 mi)

Reconstruct conditions as of

Evolution of the network

This year, in context

In the weeks around 2026-08-14 (the newest reading on file), flows at the 43 ranked gages are running at a median 80% of their own long-term norm for this window — 30 below a typical year, 13 at or above. Driest relative to its record: LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME, ranking 1st lowest of 28 years.

How this comparison is made

Each gage's mean flow over the 3 days either side of 2026-08-14, compared with the same window in every year of its own record — so a gage is only ever measured against itself, and gages with no record in the window are counted out rather than guessed.

Gage flow trend & changepoints

What counts as a trend here

Computed 2026-08-30 19:13 from 66 gage(s) with cached period-of-record data. The series is each gage's annual mean flow in cfs (years with ≥300 days of record). Mann-Kendall (trend, with the Hamed–Rao correction for serial correlation — persistence can otherwise fake significance) and Pettitt (changepoint) both require at least 8 years spanning at least 10 years of record. A gage below that reports no signal — which is not the same as “no change.” The %-per-decade figure is the same Sen slope divided by the gage's median annual flow, for comparing across streams of very different size; it is omitted for near-ephemeral channels where the median is too small to divide by honestly.

Of the 66 gages with enough record, 5 are trending down and 1 up, and 8 carry a detected shift. The clearest is Cache La Poudre at Canyon Mouth near Fort Collins, its annual mean flow changing -18.66 cfs per decade (-5.0% of its median annual flow) over 140 years (p<0.0001). The other 55 show no clear signal either way. 2 transbasin gages meter imported or exported water — marked ⇆ below and kept out of these counts, because that flow is an operator's decision, not the basin's hydrology (all transbasin diversions).

What drought has cost here

Since 1991, federal crop insurance has paid $38,566,387 in drought-caused claims across Larimer, Weld counties — 15.4% of all insured crop losses there. The worst year was 2022 ($8,759,643).

USDA crop-insurance indemnities where the recorded cause of loss is drought, summed over the counties this district's gages sit in. Counties overlap water districts imperfectly, and insured-crop claims are a floor on drought damage, not a total. Source: USDA RMA cause-of-loss files.

Gage	Trend	Change / decade cfs · % of median annual flow	Significance	Years	Changepoint
▸ Cache La Poudre at Canyon Mouth near Fort Collins CLAFTCCO	↓ decreasing	-18.66 cfs -5.0%	p<0.001	140	~1938
▸ Hansen Supply Canal to Cache La Poudre River near Fort Collins HSCCLPCO	↓ decreasing	-11.12 cfs -11.3%	p<0.001	60	~1977
▸ ⇆ Grand River Ditch at La Poudre Pass GRNDRDCO	↓ decreasing	-1.73 cfs -6.7%	p=0.002	83	~1964
▸ ⚠️ ⇆ Michigan Ditch at Cameron Pass MICDCPCO	↑ increasing	+0.66 cfs +21.5%	p=0.007	78	~1986
▸ Canal # 3 near Greeley CANAL3CO	↓ decreasing	-3.29 cfs -11.4%	p=0.007	21	—
▸ Cache La Poudre River near Rustic CLARUSCO	↓ decreasing	-190.82 cfs -65.9%	p=0.013	11	~1962
▸ Cache La Poudre near Greeley CLAGRECO	↑ increasing	+8.06 cfs +7.3%	p=0.014	109	~1969
▸ Munroe Canal MUNCANCO	↓ decreasing	-1.90 cfs -3.7%	p=0.039	54	~1976
▸ ⚠️ Hansen Fdr Can at T.O. to Cottonwood Cr. near Ni HFCCCRCO	no clear trend	+0.00 cfs	p=0.116	45	~1964
▸ Ft. Col. Ca. at Cache La Poudre River near CLACANCO	no clear trend	+1.66 cfs +11.4%	p=0.118	18	~1973
▸ Bobcreek Ditch near Deadman Mountain, near Glendevey BOBGLNCO	no clear trend	+0.00 cfs	p=0.161	76	~1997

⚠️ 2 gages flagged: their records may have quietly shifted against their neighbours, so treat their trends with caution.

How drift is detected

Every gage's annual flows are compared against each neighbour's as a double-mass curve (Searcy & Hardison, USGS WSP 1541-B); a Pettitt step test looks for a break in the ratio. A gage is flagged only when the breaks AGREE across its references, and a break against an already-suspect gage is never counted against a healthy one. A double-mass break means the ratio between two gages changed, not that either gage is faulty: a new diversion, a reservoir, or an import changes that ratio exactly as a rating shift does. Screening aid for expert review, never a measurement verdict.

55 other gage(s) show no significant trend or changepoint (not shown).

How the measurement network itself changed

This basin was not always measured the way it is today — the API-era record is dense and recent, the early record sparse. 45 gage(s) and 131 structure(s) report in 2026, but structure reporting only reached half its modern level around ~1982. Every historical claim below is checked against this: long-term shifts that co-move with the growth of the network carry an explicit measurement-evolution caution, and abandonment screens whose idleness begins before the modern reporting era are flagged †.

Decade	Gages with data (median yr)	Structures reporting (median yr)
1880s	1	0
1890s	1	0
1900s	1	0
1910s	2	0
1920s	2	0
1930s	4	0
1940s	6	0
1950s	12	26
1960s	16	28
1970s	16	77
1980s	16	100
1990s	14	102
2000s	22	132
2010s	28	164
2020s	44	148

Mass-balance (network closure) trend

Structure divrec-history backfill coverage as of the last check: 4% of 3681 schematic-relevant structures. 0 year(s) clear the 30% coverage gate so far -- the trend activates automatically once qualifying years span a full decade. No action needed; the nightly backfill keeps extending the record.

Reach gain/loss shifts (1950–2026)

Mass-balance kinks computed for every summer month back to 1950 (4211 reach-snapshots) — which reaches gain or lose water, and how that has shifted across decades. Each shift is cross-checked against the observation record above: as more diversions became metered, "unaccounted" water shrinks mechanically, which can masquerade as a hydrologic shift.

LARIMER AND WELD IRRIGATION COMPANY @ 30 FT PARSHALL FLUME: reach shifted from +13 cfs to +202 cfs summer mean (more gaining, p=0.003, 32 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization]
NORTH POUDRE CANAL: reach shifted from +6 cfs to +15 cfs summer mean (more gaining, p=0.043, 11 yr) [crystalline foothills: minimal groundwater storage -- large or shifting unaccounted losses here are more consistent with data/measurement issues or unmodeled plumbing than with aquifer exchange] [measurement-evolution caution: this shift co-moves with the growth of the gage/metering network (rho=-0.48) -- part of it may be unaccounted water becoming accounted, not hydrologic change]
LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME: reach shifted from -189 cfs to +1 cfs summer mean (more gaining, p=0.000, 28 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization]
CACHE LA POUDRE RIVER BELOW NEW CACHE: reach shifted from -88 cfs to +189 cfs summer mean (more gaining, p=0.001, 32 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [30 alluvial wells within 2 mi of the gage; pooled water table -0.4 ft (1941–1992, no_trend)]
CACHE LA POUDRE RIVER AT FORT COLLINS, CO: reach shifted from +461 cfs to +84 cfs summer mean (more losing, p=0.009, 52 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization]
CANAL # 3 NEAR GREELEY: reach shifted from -84 cfs to +44 cfs summer mean (more gaining, p=0.001, 30 yr) [sedimentary plains/foothills: moderate groundwater connectivity -- gain/loss shifts can be real aquifer response; corroborate with nearby well records] [30 alluvial wells within 2 mi of the gage; pooled water table +0.1 ft (1941–1992, no_trend)]

Groundwater now has its own tab: 1026 monitored well(s), water-table trends, stream corridors, and the advisory depletion screen.

Reservoirs now has its own tab: 117 reservoir(s), end-of-year storage back to 1950, click-to-chart histories.

Cross-gage pattern fingerprint

Over the 52-year window with full coverage (1975–2026), the dominant shared pattern across 3 gage(s) explains 92% of year-to-year variance (almost certainly a basin-wide climate/snowpack driver).

All gages in this window move with the shared pattern -- no localized outlier.

Structures most implicated by reconciliation (as of 2026-08-14)

Which structures' data absorbed the most correction when the current mass-balance snapshot was reconciled -- see the Historical tab for the full picture on any date.

GREELEY FILTERS PIPELINE (diversion): -18.6 cfs (10% of that reach's correction)
WINDSOR EXT (diversion): -18.6 cfs (10% of that reach's correction)
HANSEN SUPPLY CANAL (diversion): -18.6 cfs (10% of that reach's correction)
WHEDBEE SPRING 1 (return): -18.6 cfs (10% of that reach's correction)
KNOX SPRING 1 (return): -18.6 cfs (10% of that reach's correction)
WHEDBEE SPRING 2 (return): -18.6 cfs (10% of that reach's correction)
SHAW SPRING WEST (return): -18.6 cfs (10% of that reach's correction)
SHAW SPRING EAST (return): -18.6 cfs (10% of that reach's correction)
KNOX POND 1 (diversion): -18.6 cfs (10% of that reach's correction)
HANSEN SUPPLY CANAL RETURN TO CACHE LA P (return): -18.6 cfs (10% of that reach's correction)

Data provenance & quality

Where these numbers come from and how far they can be trusted. Grade D (2/6 points) — the components below are the finding; the letter alone is not. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (imported 2026-08-19) for history, plus the CDSS REST API for current conditions.

Check	State	What was measured
gage freshness	stale	newest gage reading is 16 day(s) old (target 7)
diversion record	stale	newest diversion record is 669 day(s) old (DWR publishes ~1 year in arrears)
structure coverage	sparse	4% of schematic structures have data

Independent check: PASS — 100.0000% agreement across 15,052 stored values re-checked against DWR's authoritative record (HydroBase_CO_20260707), over 20 structures. 0 disagreement(s) beyond a 0.01 cfs tolerance. Checked 2026-08-19; a rotating sample covers the whole basin across successive runs, and the structures this report cites are checked every time.

Federal cross-check: PASS — 99.58% day-level agreement with USGS's own published records for the same gages, across 19 co-listed station(s) and 196,848 overlapping days (within max(2%, 0.5 cfs) daily). Pre-1950 records at some gages carry known between-agency day-stamp and transcription differences — scored at each year's best ±1-day alignment; residual disagreement is real historical divergence, flagged for review.

66 gage(s) / 661,081 daily values (1881-07-01–2026-08-14); 358 structure(s) with diversion records; 2961 with decreed rights. Methodology has not yet had independent expert review — treat every figure as an advisory screen, not an administrative or legal conclusion.

11,451 water-level measurements across 1026 monitored well(s) — 912 alluvial, 4 bedrock — plus 4 administered well(s) reporting metered pumping.

What is being counted

Observation wells and pumping wells are different populations and are never conflated: water levels come from monitored observation wells, and metered pumping comes from administered wells reporting through diversion records. Click any well to chart its own record.

Well map

3D aquifer x-ray

Every aquifer unit as its own head surface, animated through time.

How the surfaces are built, and what they are not

Alluvial water table on top, Denver Basin members (Dawson, Denver, Arapahoe, Laramie–Fox Hills) stacked beneath where measured, interpolated from measured water levels. Units are never mixed; a surface exists only inside its own unit's well coverage, with no extrapolation; thin epochs are suppressed and say why. Vertical scale is exaggerated for readability and z is head elevation in feet. These are measured heads, not a calibrated groundwater model.

Water-table trends

Of 49 well(s) with enough record for a trend test: 9 declining, 3 rising.

Fastest-declining wells	Setting	ft / decade	Span	p
▸ 83-1	alluvial	-8.03	17 yr	0.0022
▸ 110-3	alluvial	-2.03	17 yr	0.0049
▸ SB00906834ABB	alluvial	-1.94	20 yr	0.004
▸ SB00806827CBB2	alluvial	-0.83	30 yr	0.0165
▸ SB00706614AAB	alluvial	-0.82	55 yr	0.0413
▸ LSP-062 06N6712BBB	alluvial	-0.66	85 yr	0.0003
▸ SB00606812AAA	alluvial	-0.52	17 yr	0.0001
▸ LSP-061 06N6517BBC	alluvial	-0.42	93 yr	0.0419

Stream corridors — the surface connection

Where a reach's gain or loss has shifted, the wells within two miles of its anchoring gage and what their water table did over the same era.

How the corridor is assembled

For each reach whose gain/loss has shifted (Trends tab): the wells within 2 miles of its anchoring gage, their pooled water-table history over the same era, and an advisory Glover screen of lagged stream depletion from nearby metered pumping. v1 proximity = distance to the reach's anchoring gage; segment-based reach join is a flagged upgrade.

LARIMER AND WELD IRRIGATION COMPANY @ 30 FT PARSHALL FLUME: 19 alluvial well(s) nearby

LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME: 7 alluvial well(s) nearby

CACHE LA POUDRE RIVER BELOW NEW CACHE: 30 alluvial well(s) nearby; pooled water table -0.4 ft (1941–1992, no_trend, p=0.2946). Glover screen: 0.4 cfs of nearby metered alluvial pumping → est. lagged depletion 0.2–0.4 cfs (uncalibrated T/S ranges; flagged for SPDSS calibration, AWAS cross-check, and expert review — DWR's AWAS is the authority).

CACHE LA POUDRE RIVER AT FORT COLLINS, CO: 15 alluvial well(s) nearby

CANAL # 3 NEAR GREELEY: 30 alluvial well(s) nearby; pooled water table +0.1 ft (1941–1992, no_trend, p=0.6315). Glover screen: 0.1 cfs of nearby metered alluvial pumping → est. lagged depletion 0.1–0.1 cfs (uncalibrated T/S ranges; flagged for SPDSS calibration, AWAS cross-check, and expert review — DWR's AWAS is the authority).

LITTLE CACHE LA POUDRE DITCH: 10 alluvial well(s) nearby

Wells labeled by administrative world before anything else is said about them: tributary alluvium participates in the priority system; designated-basin and Denver Basin bedrock aquifers are governed differently and are excluded from stream-connection reasoning. Read bedrock declines differently too: deep bedrock aquifers recharge negligibly on human timescales, so a falling bedrock level is storage mining — effectively permanent — not a drought response that a wet year undoes. All screens advisory.

117 reservoir(s) with 63,331 storage measurement(s), 1950–2025. Basin storage as of 2024-10-31 (the record's own end — reservoir records publish ~annually): 220,243 AF across 95 reservoir(s).

Why storage matters to the flow network

Storage change is real water the mass balance must credit — a losing reach beside a filling reservoir isn't losing water, it's banking it.

Reservoir map — how full is each vessel?

What “full” is measured against

Bubble size is proportional to a reservoir's record-high storage. Fill is its last recorded storage as a share of its surveyed capacity (USACE National Inventory of Dams) where a confident NID match exists — the tooltip names the matched dam — and as a share of its own record high otherwise. A wrong capacity would be worse than an honest record high, so only confident joins upgrade.

A dashed teal ring marks reservoirs reporting live DWR telemetry: their fill reflects yesterday's storage, is drawn as a dotted tail on charts, and is treated as provisional until the next verified HydroBase snapshot supersedes it.

A dashed red ring marks a dam under an active storage restriction from DWR's Dam Safety branch — the State Engineer has limited how much it may legally store, so a low fill can be an order, not a drought. Hazard class and inspection condition come from the same record, joined only where the dam carries this reservoir's WDID or a confident NID match — a wrong dam's restriction would be worse than none shown.

Basin storage, end of each water year

End-of-water-year totals; per-year reservoir counts shown because reporting coverage varies -- a total is only comparable to years with similar counts.

Largest reservoirs on record

Click a row to chart its full storage history, or open its dossier for rights, documents and dam-safety facts.

Reservoir	Last recorded storage (AF)	As of	Full	Dam (DWR Dam Safety)
▸ HORSETOOTH RESERVOIR (0303732)	96,972	2024-10-31	—	—	dossier →
▸ UNNAMED IRR A COL PONDS (0303734)	95,723	1973-11-01	—	—	dossier →
▸ COBB LAKE RES (0303730)	17,170	2024-10-31	—	—	dossier →
▸ RAWHIDE RES (0303952)	15,428	2024-10-31	—	—	dossier →
▸ WINDSOR RES (0303738)	10,880	2024-10-31	—	—	dossier →
▸ RES NO 8 (0303727)	6,704	2024-10-31	—	—	dossier →
▸ RIST CANON RES (0303812)	6,428	1986-05-31	—	—	dossier →
▸ PARK CREEK RES 1 (0303752)	5,630	1971-11-01	—	—	dossier →

Snow-water equivalent, WY2026

No snow on the ground — normal for the date; the snow year begins in October. The chart shows the full water year just ending.

SNOTEL site	Elev (ft)	SWE (in)	% of median	Typical peak
Black Mountain	8940	0.0	—	April 17 (12.5 in)
Deadman Hill	10240	0.0	—	May 4 (21.8 in)
Hourglass Lake	9380	0.2	—	April 19 (13.0 in)
Long Draw Resv	9980	0.1	—	April 27 (18.3 in)

NRCS SNOTEL, daily. Sites are assigned to the district whose boundary contains them — the snow that feeds this district can also sit in a neighboring headwater district.

Two ways a snow year goes wrong (1979–2026)

A bad snow year here comes in two flavors (both called snow drought), and the river feels them differently. In 8 of the last 48 winters the snow never came — the pack peaked below 80% of its median. In 1 more, the snow came but left early — a near-normal peak melted out two weeks or more ahead of its usual date, sending the water down before the season needed it. This year was one of the dry ones: the pack peaked at 66% of median.

The snow never came: 1981, 1987, 2001, 2002, 2004, 2006, 2007, 2026. The snow left early: 2012.

Computed by this site from 4 SNOTEL sites’ full daily records (NRCS AWDB, back to 1979). Each year is measured against each site’s own multi-decade median — not the 1991–2020 normal the chart above uses — so the 1980s grade against a fair baseline. Peak and melt-out need 85% of the season’s days on the record; thin years are dropped, not guessed. Derived from snow measurements alone — it cannot tell dry-from-warm causes apart, only what the snowpack did.

Runoff outlook — Cache La Poudre R at Canyon Mouth

NRCS's final issue (2026-06-01) calls it even odds that at least 87 kAF arrives over 06-01 to 09-30 — 51% of a normal season; almost certainly at least 68, probably not more than 110. Our own record at this gage shows 59 kAF so far this period (partial record: 75 of 92 days). New forecasts begin in January. How to read these numbers →

The record-adjusted April benchmark

NRCS’s April issue (2026-04-01) called even odds at 148 kAF over 04-01 to 09-30. Re-anchoring that number on this river’s own history — how its April issues have verified, the winter’s baseflow, and the district’s April 1 snowpack — moves it to 84 kAF. The river has delivered 99 kAF so far (partial record).

Computed by this site — not an NRCS number, and shown only because it earned it: replayed over 46 past seasons here (1979–2025), never seeing the year it predicts, the adjustment cut the typical April miss from 28% to 18%. At points where it does not beat NRCS, no adjusted number appears. Coefficients are frozen each August; the model never changes mid-season. Method and honest limits →

90% chance of at least	70% chance of at least	50% chance of at least	30% chance of at least	10% chance of at least	Normal	Observed
68	79	87	96	110	169	59*

How good are these forecasts here? (1950–2025)

Grading every April issue against what the river then delivered, measured at this gage’s own record — 75 seasons: the median miss of the 50% forecast is 29%, with a high bias of 5%, and the observed volume landed inside the stated 10–90% band 72% of the time (a calibrated forecast would say 80%).

Computed by this site: NRCS's archived April issues (their period as issued each year) against the observed volume in DWR’s published record; years with under 90% daily coverage are dropped, not summed. A grade of the forecast, never of the forecasters — these are hard rivers. How this point ranks among every graded Colorado forecast point →

What April snow has meant for this river (1979–2026)

Across 48 measured years, the season’s water has closely followed the April snowpack: a year opening April with 80% of median snow has typically gone on to deliver about 46% of a normal season (a snow-to-runoff elasticity of 1.4). In warm, early-melt years the river delivered a median of 25% of a normal season, against 65% in typical years — the timing of the melt matters, not just its size. This year opened April at 44% of median snow and delivered 31% of a normal season.

Computed by this site: the district’s April 1 SWE (% of each SNOTEL site’s own-record median) against the observed April–July volume at this gage (% of its median season) — a fixed window every year, unlike the forecast grades above, which use each issue’s own period. The slope is fit so single wild years can’t steer it (Theil–Sen, log space); years missing 10% of their days are dropped.

Decreed rights on this network run from 1860-06-01 to 2021-03-31. 25 abandonment screens and 23 compliance flags are listed below as leads for review — a screen is not an abandonment and a flag is not a violation.

Rights on file: 4895 across 2961 structure(s); 0 structure(s) carry 0 court-case references. Advisory reading aids on public DWR data — not administrative or legal conclusions.

Abandonment radar (25 screens)

Absolute rights with 10+ years of no recorded diversions. Screens only — storage, alternate points, and plan operations can explain nonuse lawfully. And diversion REPORTING itself only reached its modern level ~1982 — idleness that begins before then may be unreported use, not nonuse (flagged † below).

MARTIN CALLOWAY DITCH (0301109) DWR↗ (1868-03-01, 15.2 cfs decreed): last active 1977 — 47 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1982) -- early absence of record is weak evidence of nonuse
CHAFFEE DITCH (0300925) DWR↗ (1872-03-10, 22.4 cfs decreed): last active 1979 — 45 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1982) -- early absence of record is weak evidence of nonuse
BOXELDER CHANNEL DITCH 1 (0301115) DWR↗ (1880-05-01, 2.5 cfs decreed): last active 1979 — 45 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1982) -- early absence of record is weak evidence of nonuse
BOXELDER RES 1 (0303717) DWR↗ (1883-07-01, 0.0 cfs decreed): last active 1987 — 37 years idle
WILLIAM CALLOWAY DITCH 2 (0300996) DWR↗ (1875-01-28, 4.9 cfs decreed): last active 1992 — 32 years idle
SWANSON RES (0303568) DWR↗ (1935-12-31, 0.0 cfs decreed): last active 1993 — 31 years idle
MITCHELL WEYMOUTH D 1 (0301040) DWR↗ (1874-05-15, 17.4 cfs decreed): last active 1996 — 28 years idle
GRAY RES 3 (0303748) DWR↗ (1904-11-14, 0.0 cfs decreed): last active 1997 — 27 years idle
CHASE DITCH (0300997) DWR↗ (1880-07-07, 21.4 cfs decreed): last active 2000 — 24 years idle
PANHANDLE RES (0303814) DWR↗ (1968-12-12, 0.0 cfs decreed): last active 2002 — 22 years idle

Compliance screens (23 advisory flags)

Screened 53 of 2961 structures with rights (150 have diversion history on file). A flag is a lead for expert review — augmentation plans, exchanges, and free-river conditions can make over-decree diversions lawful and are deliberately not modeled.

POUDRE VALLEY CANAL (0300907) DWR↗: Observed p99 daily rate 410.0 cfs (max 642.0) exceeds total decreed absolute 29.5 cfs across 21745 recorded day(s).
CACHE LA POUDRE DITCH (0300915) DWR↗: Observed p99 daily rate 101.0 cfs (max 155.0) exceeds total decreed absolute 82.5 cfs across 47266 recorded day(s).
OGILVY DITCH (0300937) DWR↗: Observed p99 daily rate 92.8 cfs (max 129.0) exceeds total decreed absolute 91.1 cfs across 34158 recorded day(s).
GREELEY FILTERS PIPELINE (0300908) DWR↗: Observed p99 daily rate 40.1 cfs (max 57.5) exceeds total decreed absolute 28.0 cfs across 96130 recorded day(s).
WETZLR WYMOUTH MITCHEL D (0301041) DWR↗: Observed p99 daily rate 15.9 cfs (max 20.0) exceeds total decreed absolute 13.4 cfs across 4982 recorded day(s).
TAYLOR GILL DITCH (0301029) DWR↗: Observed p99 daily rate 13.9 cfs (max 49.4) exceeds total decreed absolute 12.2 cfs across 28961 recorded day(s).
NEW CACHE EATON DRAW DIVERSION (0300773) DWR↗: Observed p99 daily rate 12.9 cfs (max 97.0) exceeds total decreed absolute 7.4 cfs across 3996 recorded day(s).
EAGLE LAKE (0303351) DWR↗: Observed p99 daily rate 10.4 cfs (max 11.7) exceeds total decreed absolute 4.5 cfs across 82 recorded day(s).
PEERY DITCH NO 1 (0301051) DWR↗: Observed p99 daily rate 5.2 cfs (max 6.2) exceeds total decreed absolute 3.5 cfs across 1400 recorded day(s).
SOUTH FORK PIPELINE (0301059) DWR↗: Observed p99 daily rate 5.0 cfs (max 7.4) exceeds total decreed absolute 4.1 cfs across 1190 recorded day(s).

Seniority (top structures by decreed rate)

Structure	Senior priority date	Rights	Decreed abs (cfs)	Decreed abs (AF)	Conditional?
LARIMER WELD IRR CANAL (0300919) DWR↗	1861-06-01	45	2797.5	0	—
NEW CACHE LA POUDRE CO DITCH (0300929) DWR↗	1862-03-01	30	763.6	0	yes
LARIMER COUNTY DITCH (0300911) DWR↗	1861-06-01	40	750.0	0	yes
NORTH POUDRE CANAL (0300994) DWR↗	1861-06-01	57	715.0	0	—
NORTH POUDRE SUPPLY CNL (0300905) DWR↗	1861-06-01	57	281.2	0	yes
LARIMER WELD WEST DRAIN (0301305) DWR↗	1864-06-01	2	220.0	900	—
CANAL 3 DITCH (0300934) DWR↗	1870-04-01	14	181.9	76	yes
LARIMER COUNTY NO 2 D (0300914) DWR↗	1861-06-01	42	178.5	440	yes
LARIMER CO NO 2 SPG CR (0301104) DWR↗	1873-04-01	1	175.0	0	—
LARIMER WELD MIDDLE DRAN (0301304) DWR↗	1864-06-01	2	170.0	500	—
LARIMER WELD EAST DRAIN (0301306) DWR↗	1864-06-01	2	170.0	630	—
NEW MERCER D SPG CR DIVR (0301088) DWR↗	1872-07-01	2	164.0	0	—
LAKE CANAL DITCH (0300922) DWR↗	1861-06-01	24	158.3	590	—
PLEASANT VALLEY LAKE CNL (0300910) DWR↗	1861-06-01	28	137.9	0	—
CACHE LA PODR RES INLET CANAL (0300924) DWR↗	1865-04-10	8	120.0	0	—

No inventory or legal-document changes detected since the daily watch began.

Water-court filings this month (division-wide)

16 applications in the 2026-07 resume for this basin's division — new rights, changes, augmentation plans — from the water clerk's statutory monthly notice (C.R.S. 37-92-302), the earliest public signal of a new claim. Filings are division-wide, not district-filtered: check the county column. Full resume PDF at the Judicial Branch →

Anyone affected may file a statement of opposition until 2026-09-30 (30 days left). C.R.S. 37-92-302(3): due by the last day of the second month following the filing month — computed, not legal advice; confirm with the water clerk.

All 16 filings, with excerpts

Case	What it asks	County	Excerpt
`2026CW3054`	new underground right	—	CASE NUMBER 2026CW3054 BRIAN ROBERT WEISSEG LIVING TRUST DATED MAY 15, 2011, AMANDA VINTON WEISSEG LIVING TRUST DATED DECEMBER 10, 2014 , c/o Brian Robert Weisseg and Amanda Vinton Weisseg, c/o John P. Justus, CURTIS, JUSTUS, & ZAHEDI, LLC, 1333 W. 120th Ave.,…
`2026CW3062`	—	—	CASE NUMBER 2026CW3062 PRI #2, LLC (“Applicant”), 2138 Flying Horse Club Drive, Colorado Springs, Colorado 80921. Please forward all correspondence or inquiries regarding this matter to Attorneys for Applicant: Alan G. Hill; Ashley Pollock Zahedi; Nicoli R. Bo…
`2026CW3106`	—	—	CASE NUMBER 2026CW3106 STANLEY E. KELLOGG, PO Box 1935 Grand Lake, CO 80447. Direct all pleadings and correspondence to Chris D. Cummins and Sedona E. Chavez, Monson, Cummins, Shohet & Farr, LLC, 13511 Northgate Estates Dr., Ste. 250, Colorado Springs, CO 8092…
`2026CW3107`	—	—	CASE NUMBER 2026CW3107 Colorado Division of Parks and Wildlife - Order for Change of Venue to WD2.…
`2026CW3108` 0107223 0107980 0107981	reasonable diligence, make absolute	—	CASE NUMBER 2026CW3108 WEITZEL LAND LLC , 28271 Road L, Brush, Colorado 80723, Lawrence Custer Grasmick Jones & Donovan LLP Attorneys for Applicant, Weitzel Land LLC Ryan M. Donovan, #44435 Regan M. O’Donnell, #62937 APPLICATION TO MAKE CONDITIONAL WATER RIGHT…
`2026CW3109`	change of water right	—	CASE NUMBER 2026CW3109 ROBERT AND ALLISON JOHNSON, 1100 Shoreline Dr, Windsor, CO 80550, 970-581-2994. Please send all further pleadings to: Daniel K. Brown, Esq. and Whitney Phillips, Esq. Fischer, Brown, Bartlett, Larsen & Irby, P.C., 1319 E. Prospect Road, …
`2026CW3110`	reasonable diligence	—	CASE NUMBER 20 26CW3110 (Case No. 19CW3038, 09CW279) THE CITY OF AURORA , COLORADO, a municipal corporation of the Counties of Adams, Arapahoe and Douglas acting by and through its Utility Enterprise (“Aurora" or "Applicant"). APPLICATION FOR A FINDING OF REAS…
`2026CW3111`	—	IN WELD	CASE NUMBER 2026CW3111 CONCERNING THE APPLICATION FOR WATER RIGHTS OF THE COLORADO DIVISION OF PARKS AND WILDLIFE AND THE PARKS AND WILDLIFE COMMISSION, IN WELD COUNTY ; Colorado Division of Parks and Wildlife and the Parks and Wildlife Commission (“CPW”), 606…
`2026CW3112` 0904297	reasonable diligence	ASONABLE DILIGENCE IN JEFFERSON	CASE NUMBER 2026CW3112 (2019CW3233, 2013CW3067, 2002CW138) APPLICATION FOR FINDING OF REASONABLE DILIGENCE IN JEFFERSON COUNTY. RED ROCKS COUNTRY CLUB c/o Richard J. Mehren, Cameron J. Abatti, Moses, Wittemyer, Harrison and Woodruff, P.C., 2595 Canyon Boulevar…
`2026CW3113`	change of water right	ATE POINT OF DIVERSION IN WELD	CASE NUMBER 20 26CW3113 APPLICATION FOR CHANGE OF WATER RIGHT TO ADD ALTERNATE POINT OF DIVERSION IN WELD COUNTY. 1. Name and Address of Applicant . GWIP, LLC, 252 Clayton Street, Fourth Floor, Denver, Colorado 80206. Copies of all pleadings and other correspo…
`2026CW3114`	reasonable diligence	THE	CASE NUMBER 2026CW3114 CONCERNING THE APPLICATION FOR WATER RIGHTS OF THE COUNTY OF BOULDER (SUCCESSOR TO CEMEX, INC.) APPLICATION FOR FINDING OF REASONABLE DILIGENCE IN BOULDER COUNTY . Attorneys for applicant: Andrea L. Benson, Esq., Reg. No. 33176, Gilbert …
`2026CW3115`	plan for augmentation, new underground right	—	CASE NUMBER 2026CW3115 DORADO AND RAMIRO ROSALES , 14551 Imboden Rd, Hudson, CO 80642. James J Petrock, John D Buchanan, Hayes Poznanovic Korver LLC, 700 17 th Street, Suite 1800, Denver, CO 80202. APPLICATION FOR UNDERGROUND WATER RIGHTS FROM NONTRIBUTARY AND…
`2026CW3116`	new underground right	—	CASE NUMBER 2026CW3116 ROBERT D HOFFMANN AND AMY LEE HOFFMANN , 4962 N State Highway 67, Sedalia, CO, 80135. Philip E. Lopez, Eric K. Trout, Fairfield and Woods, P.C., 1801 California Street, Suite 2600, Denver, CO, 80202. APPLICATION FOR UNDERGROUND WATER RIG…
`2026CW3117`	reasonable diligence	—	CASE NUMBER 20 26CW3117 LOWER POUDRE AUGMENTATION COMPANY, THE NEW CACHE LA POUDRE IRRIGATING COMPANY, AND THE CACHE LA POUDRE RESERVOIR COMPANY, 33040 Railroad Avenue, P.O. Box 104. Lucerne, CO 80646, (970) 352-0222. Please send all further pleadings to: Bren…
`2026CW3118`	—	DOUGLAS	CASE NUMBER 2026CW3118 ROBERT H BASTIAANS AND JANICE A YUVAN, 10440 Meadow Run, Parker, CO, 80134. Philip E. Lopez, Eric K. Trout, Fairfield and Woods, P.C., 1801 California Street, Suite 2600, Denver, CO, 80202. APPLICATION FOR AMENDMENT OF A PRIOR DECREE IN …
`2026CW8`	new storage right	RIGHT IN CLEAR CREEK	CASE NUMBER 2026CW8 JONELLE AND JOHN PAUL HADDAD, P.O. Box 139, Dumont, CO 80436. 720 -951-1183. APPLICATION FOR ABSOLUTE/CONDITIONAL WATER STORAGE RIGHT IN CLEAR CREEK COUNTY. Date of original decree: 07-30-20 in case 20CW7, WD1. Haddad Pond fka Duke Pond loc…

Active substitute water supply plans in this district

Temporary State Engineer approvals to divert out of priority (37-92-308 / 37-90-137). A structure operating under one behaves differently under a call than its decreed rights alone suggest — the priority tables above don't know about these; this list does. Source: DWR’s active-SWSP register, refreshed nightly.

Plan	Type	Status	Expires	Structure	Documents
FIRESTIEN/TIGGES PIT-M96-060	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-06-30	0302590	plan file
CITY OF GREELEY (EMERGENCY)	37-92-308(5) PLANS LESS THAN 5 YEARS	Approved	2026-07-31	0303303	plan file
BUCKLEN EQUIPMENT CO - BUCKLEN PIT	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-10-31	0302538	plan file
F-STREET PIT AKA 83RD JV "F" STREET PIT (RESOURCE) PLAN NO. 3450	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	—	plan file
LA POUDRE (M83090)	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0303010	plan file
LOVELAND READY MIX CONCRETE-LAPORTE OPERATIONS/KNOX PIT	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0302532	plan file
NORTH LA POUDRE (M00-144)	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0302519	plan file
VARRA COMPANIES INC. - FEIT WELL - 78554-F	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0304999	plan file
VARRA-COULSON RESOURCE PROJECT	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0303044	plan file
W W FARMS (AKA RIVERVIEW FARMS)	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	—	plan file
WESTERN SUGAR PIT (M10-49)	37-90-137(11) GRAVEL PIT PLAN	Approved	2026-12-31	0303038	plan file
EAST 8TH STREET PIT (M-2000-082)	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-03-31	0302562	plan file
GREELEY PIT (35 AVE) M77036	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-03-31	0302546	plan file
GREELEY PIT (M1977-151)	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-03-31	0302545	plan file
POUDRE TECH WHITNEY LEASE	37-92-308(5) PLANS LESS THAN 5 YEARS	Approved	2027-03-31	0302551	plan file
TIMNATH-CONNELL PIT M99050	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-03-31	0302526	plan file
FORT COLLINS - WSSC SHARES	37-92-308(4) PLAN PENDING COURT APPLICATION	Approved	2027-04-30	—	plan file
MARTIN MARIETTA'S PARSONS MINE	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-05-31	0302583	plan file
WINDSOR EAST MINE	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-05-31	—	plan file
EAST RIGDEN PIT	37-90-137(11) GRAVEL PIT PLAN	Approved	2027-06-30	0302570	plan file
25TH AVENUE PIT	37-90-137(11) GRAVEL PIT PLAN	Approved	—	0303330	plan file
EAST LARIMER COUNTY AND FORT COLLINS-LOVELAND WATER DISTRICTS - NEW MERCER SHARES	37-92-308(4) PLAN PENDING COURT APPLICATION	Approved	—	—	plan file
LAMB LAKES	37-90-137(11) GRAVEL PIT PLAN	Approved	—	0302556	plan file
BROKEN ARROW INVESTMENTS, LLC - DERR PIT	37-90-137(11) GRAVEL PIT PLAN	Pending	—	0302547	plan file
HARTFORD - PRAIRIE SONG	37-92-308(4) PLAN PENDING COURT APPLICATION	Pending	—	—	plan file

Showing 25 of 29 plans — the rest are on DWR’s register.

If a call were placed at a given seniority, which structures in this basin would be out of priority, and how much of their decreed rate would be curtailed? Computed from this basin's cached decrees.

What this does and doesn't model. Seniority arithmetic only: every right junior to the call is treated as curtailed. It does not model reach applicability — structures downstream of the calling point are not administered by it — and it applies no futile-call judgment. Read it as “who is junior to this date, and by how much,” not as a prediction of what the Division Engineer would actually order.

Pick a calling right

Real decrees from this basin, ordered by administration number — that is, by actual seniority. The years will look out of order, and that is correct: an administration number encodes the adjudication date as well as the appropriation date, so a right appropriated in 1970 can be administered ahead of one from 1950. A senior call curtails almost everything; a junior one curtails almost nothing.

Or enter an administration number directly

Administration number

DWR administration numbers encode appropriation and adjudication dates; lower is more senior.

Stream	Gage	R-mile	Predicted (cfs)	Observed (cfs)	Δ (cfs)	Reach (mi)	Hypothesis
MAINSTEM	HORSETOOTH RESERVOIR (OUTFLOW) (HOROUTCO)	114.4	0.0	338.7	+338.7	0.6	Unaccounted +338.7 cfs gain over 0.6 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	ARTHUR/FT. COLLINS IRR CANAL (ARTCANCO)	116.3	338.7	2.0	-336.7	1.9	Unaccounted -336.7 cfs loss over 1.9 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	PLEASANT VALLEY LAKE CNL (PVLCANCO)	109.1	309.9	29.0	-280.9	0.4	Unaccounted -280.9 cfs loss over 0.4 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	JACKSON DITCH (JAKDITCO)	112.5	239.0	9.7	-229.3	2.2	Unaccounted -229.3 cfs loss over 2.2 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	LARIMER COUNTY DITCH (LACDITCO)	110.2	29.0	239.0	+210.0	1.2	Unaccounted +210.0 cfs gain over 1.2 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	CACHE LA POUDRE AT CANYON MOUTH NEAR FORT COLLINS (CLAFTCCO)	107.8	2.3	157.6	+155.3	4.3	Unaccounted +155.3 cfs gain over 4.3 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	HANSEN SUPPLY CANAL TO CACHE LA POUDRE RIVER NEAR FORT COLLINS (HSCCLPCO)	108.7	157.6	309.9	+152.3	1.0	Unaccounted +152.3 cfs gain over 1.0 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	LARIMER AND WELD IRRIGATION COMPANY @ 30 FT PARSHALL FLUME (LAWIRRCO)	116.6	2.0	138.4	+136.5	0.3	Unaccounted +136.5 cfs gain over 0.3 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	CACHE LA POUDRE RIVER AT FORT COLLINS, CO (CLAFORCO)	119.3	138.4	18.4	-120.0	2.7	Unaccounted -120.0 cfs loss over 2.7 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	BOBCREEK DITCH NEAR DEADMAN MTN., NEAR GLENDEVEY (BOBGLNCO)	63.5	76.5	0.0	-76.5	8.8	Unaccounted -76.5 cfs loss over 8.8 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	NEW CACHE LA POUDRE CANAL NEAR TIMNATH (CLAIRRCO)	131.2	58.8	1.1	-57.7	0.3	Unaccounted -57.7 cfs loss over 0.3 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	OGILVY DITCH (OGIDITCO)	159.4	1.0	49.5	+48.5	1.0	Unaccounted +48.5 cfs gain over 1.0 mi. Likely cause: stale/missing return data at OGILVY RETURN STRUCTURE, OGILVY D CENTRAL AUG RETURN.
MAINSTEM	NEW SAND CREEK LATERAL DITCH (NSCDITCO)	160.1	49.5	1.0	-48.4	0.8	Unaccounted -48.4 cfs loss over 0.8 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	CANAL # 3 NEAR GREELEY (CANAL3CO)	147.6	2.9	43.9	+41.0	0.8	Unaccounted +41.0 cfs gain over 0.8 mi. Likely cause: stale/missing return data at WHITNEY DITCH WEST RETURN, NEW CACHE ORR LATERAL AUG STATION RETURN.
MAINSTEM	GREELEY WASTEWATER PLANT EFFLUENT (GREWASCO)	158.4	41.8	1.0	-40.8	0.1	Unaccounted -40.8 cfs loss over 0.1 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	CACHE LA POUDRE NEAR GREELEY (CLAGRECO)	160.7	1.0	40.2	+39.2	0.6	Unaccounted +39.2 cfs gain over 0.6 mi. Likely cause: stale/missing return data at CANAL 3 16TH STREET RETURN.
MAINSTEM	WHITNEY DITCH DIVERSION (WHITNYCO)	134.9	1.1	35.4	+34.3	3.6	Unaccounted +34.3 cfs gain over 3.6 mi. Likely cause: stale/missing return data at NEW CACHE SERFER AUG STATION RETURN.
MAINSTEM	FOSSIL CREEK OUTLET (FOSOUTCO)	130.5	18.9	45.3	+26.4	5.9	Unaccounted +26.4 cfs gain over 5.9 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	B H EATON DIVERSION (BHEATNCO)	135.0	35.4	10.8	-24.6	0.1	Unaccounted -24.6 cfs loss over 0.1 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	MUNROE CANAL (MUNCANCO)	102.1	0.2	22.6	+22.5	36.6	Unaccounted +22.5 cfs gain over 36.6 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	NORTH FORK CACHE LA POUDRE RIVER AT LIVERMORE, CO (CLANLICO)	103.2	22.6	4.8	-17.8	1.1	Unaccounted -17.8 cfs loss over 1.1 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	CACHE LA POUDRE RIV AB BOXELDER CRK NR TIMNATH, CO (CLABOXCO)	124.6	3.2	18.9	+15.7	1.0	Unaccounted +15.7 cfs gain over 1.0 mi. Likely cause: stale/missing return data at NORTH WELD CO WD ARTHUR D RETURN FLOW IM.
MAINSTEM	SOUTH FORK CACHE LA POUDRE BELOW JACKS GULCH (CLASRKCO)	163.3	40.2	24.8	-15.4	2.6	Unaccounted -15.4 cfs loss over 2.6 mi. Returns in this reach with stale data (ACWWA DONALDSON SURFACE RTN POINT IMPACT) — over-reporting elsewhere is also possible.
MAINSTEM	BOXELDER DITCH (BOXDITCO)	123.5	18.4	3.2	-15.2	4.2	Unaccounted -15.2 cfs loss over 4.2 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	CACHE LA POUDRE RIVER BELOW NEW CACHE (CLARIVCO)	130.9	45.3	58.8	+13.5	0.5	Unaccounted +13.5 cfs gain over 0.5 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	BH EATON AUG RETURN (BHERTNCO)	135.8	10.8	1.1	-9.8	0.8	Unaccounted -9.8 cfs loss over 0.8 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME (LARNO2CO)	113.7	9.7	0.0	-9.7	1.2	Unaccounted -9.7 cfs loss over 1.2 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	LITTLE CACHE LA POUDRE DITCH (LTCDITCO)	113.8	9.3	0.0	-9.3	0.0	Unaccounted -9.3 cfs loss over 0.0 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME (LARNO2CO)	113.7	0.0	6.4	+6.4	0.0	Unaccounted +6.4 cfs gain over 0.0 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	JONES DITCH (JONESDCO)	144.4	1.1	6.5	+5.5	8.6	Unaccounted +5.5 cfs gain over 8.6 mi. Likely cause: stale/missing return data at WHITNEY DITCH KADLUB RETURN, NEW CACHE JOHN LAW RETURN, WHITNEY D GREAT WESTERN RETURN.

Gage ⇅	Station ⇅	Avg cfs Aug 17–Aug 23 ⇅	% Hist Median ⇅	Rank ⇅	Δ1wk ⇅	Δ4wk ⇅	Yrs ⇅	Status ⇅
BOBGLNCO	BOBCREEK DITCH NEAR DEADMAN MTN., NEAR GLENDEVEY	0.0	0%	0	+0	+0	0.0	NO_DATA
CANAL3CO	CANAL # 3 NEAR GREELEY	43.9	83%	0	-6	-10	26.4	SHORT_RECORD
LARNO2CO	LARIMER COUNTY #2 @ 12 FT PARSHALL FLUME	0.0	0%	0	+0	+0	26.9	SHORT_RECORD
NOCALACO	N FK CACHE LA POUDRE R BLW HALLIGAN RES NR VA DALE	5.4	6%	0	-33	-41	28.4	SHORT_RECORD
CLAWASCO	CACHE LA POUDRE RIVER AT GREELEY WASTEWATER PLANT	41.8	74%	0	-15	+2	22.0	SHORT_RECORD
GREWASCO	GREELEY WASTEWATER PLANT EFFLUENT	1.0	8%	0	-0	-20	24.0	SHORT_RECORD
TAGDITCO	TAYLOR GILL DITCH	0.0	0%	0	-3	-8	10.7	SHORT_RECORD
OGIDITCO	OGILVY DITCH	49.5	72%	0	-3	+15	12.9	SHORT_RECORD
JAKDITCO	JACKSON DITCH	9.7	90%	0	-1	-4	10.8	SHORT_RECORD
NPRCANCO	NORTH POUDRE CANAL	3.8	5%	0	-35	-38	10.6	SHORT_RECORD
JONESDCO	JONES DITCH	6.5	72%	0	-1	-1	9.9	SHORT_RECORD
NSCDITCO	NEW SAND CREEK LATERAL DITCH	1.0	40%	0	+0	+0	5.9	SHORT_RECORD
BOXDITCO	BOXELDER DITCH	3.2	13%	0	-10	-15	5.8	SHORT_RECORD
CLANHACO	N FK CACHE LA POUDRE R ABV HALLIGAN RES	5.2	14%	0	-3	-2	5.7	SHORT_RECORD
CLASRKCO	SOUTH FORK CACHE LA POUDRE BELOW JACKS GULCH	24.8	34%	0	-5	-50	3.3	SHORT_RECORD
BHEATNCO	B H EATON DIVERSION	10.8	83%	1	-1	-2	10.1	SHORT_RECORD
FOSOUTCO	FOSSIL CREEK OUTLET	45.3	82%	11	-16	-76	10.0	SHORT_RECORD
LAWIRRCO	LARIMER AND WELD IRRIGATION COMPANY @ 30 FT PARSHALL FLUME	138.4	68%	13	+16	+49	27.4	SHORT_RECORD
CLANSECO	NORTH FORK CACHE LA POUDRE RIVER BELOW SEAMAN RESERVOIR	2.3	31%	13	-0	+0	21.8	SHORT_RECORD
PVLCANCO	PLEASANT VALLEY LAKE CNL	29.0	91%	29	-3	-7	10.6	SHORT_RECORD
LTCDITCO	LITTLE CACHE LA POUDRE DITCH	9.3	61%	31	+0	-8	10.6	SHORT_RECORD
ARTCANCO	ARTHUR/FT. COLLINS IRR CANAL	2.0	55%	34	-0	+0	10.7	SHORT_RECORD
HOROUTCO	HORSETOOTH RESERVOIR (OUTFLOW)	338.7	79%	35	+43	+154	25.2	SHORT_RECORD
NEWMERCO	NEW MERCER NEAR LAPORTE	6.4	85%	36	-0	-3	26.8	SHORT_RECORD
LAPLODCO	LA POUDRE PASS CREEK BELOW LONG DRAW RESERVOIR	74.7	80%	41	-21	-74	14.1	SHORT_RECORD
WOROUTCO	WORSTER RESERVOIR OUTLET	0.2	0%	50	-0	+0	0.0	SHORT_RECORD
WHITNYCO	WHITNEY DITCH DIVERSION	35.4	109%	70	+0	-1	10.0	SHORT_RECORD
LACDITCO	LARIMER COUNTY DITCH	239.0	124%	79	+28	+27	10.4	SHORT_RECORD
BHERTNCO	BH EATON AUG RETURN	1.1	0%	88	-1	-1	5.1	SHORT_RECORD
CENJNZCO	CCWCD JONES DITCH AUG RETURN	6.1	124%	100	-0	+1	8.1	SHORT_RECORD
JWCCHACO	JOE WRIGHT CREEK BELOW CHAMBERS RESERVOIR	76.5	119%	100	+8	-31	7.4	SHORT_RECORD
WHWRTNCO	WHITNEY DITCH WEST RETURN	2.9	126%	100	-0	-0	5.4	SHORT_RECORD
MUNCANCO	MUNROE CANAL	22.6	21%	0	-46	-67	64.9	OK
JOEBELCO	JOE WRIGHT CREEK BELOW JOE WRIGHT RESERVOIR, CO.	3.0	16%	0	-10	-35	48.5	OK
CLAIRRCO	NEW CACHE LA POUDRE CANAL NEAR TIMNATH	1.1	1%	0	-12	-90	31.0	OK
MICDCPCO	MICHIGAN DITCH AT CAMERON PASS	0.0	0%	0	+0	-5	96.9	OK
CLAFORCO	CACHE LA POUDRE RIVER AT FORT COLLINS, CO	18.4	38%	3	-19	-57	52.0	OK
GRNDRDCO	GRAND RIVER DITCH AT LA POUDRE PASS	5.4	34%	7	-2	-12	101.5	OK
CLAFTCCO	CACHE LA POUDRE AT CANYON MOUTH NEAR FORT COLLINS	157.6	63%	19	-28	-165	184.7	OK
HSCCLPCO	HANSEN SUPPLY CANAL TO CACHE LA POUDRE RIVER NEAR FORT COLLINS	309.9	74%	31	+45	+161	75.9	OK
CLANLICO	NORTH FORK CACHE LA POUDRE RIVER AT LIVERMORE, CO	4.8	80%	36	-1	-4	39.8	OK
CLABOXCO	CACHE LA POUDRE RIV AB BOXELDER CRK NR TIMNATH, CO	18.9	70%	39	-19	-45	47.3	OK
CLARIVCO	CACHE LA POUDRE RIVER BELOW NEW CACHE	58.8	100%	51	-24	-21	30.8	OK
CLAGRECO	CACHE LA POUDRE NEAR GREELEY	40.2	105%	52	-7	-2	135.8	OK