Bear Creek

Division 1 · Water District 9 · As of 2026-08-18 03:02 MDT

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Bear Creek on the ground — the ditches, wells, reservoirs and gages of Water District 9 · clicktap anything for its record

Snowpack — no snow on the ground at 1 SNOTEL site — normal for the date; the snow year begins in October and typically peaks around April 29. Runoff outlook — Bear Ck ab Evergreen: even odds of at least 7 kAF over 06-01 to 09-30 — 66% 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)	Median (in)	% of median	Typical peak
Echo Lake	10660	0.0	0.0	—	April 29 (9.0 in)

Bear Ck ab Evergreen — 06-01 to 09-30 volume, thousand acre-feet (chance the volume is AT LEAST this):

90%	70%	50%	30%	10%	Normal
4	6	7	9	12	10

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.

Reconstruct conditions as of

Evolution of the network

This year, in context

In the weeks around 2026-08-17 (the newest reading on file), flows at the 23 ranked gages are running at a median 104% of their own long-term norm for this window — 9 below a typical year, 14 at or above. Driest relative to its record: BEERS SISTER RESERVOIR OUTLET, ranking 1st lowest of 8 years.

How this comparison is made

Each gage's mean flow over the 3 days either side of 2026-08-17, 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 19:22 from 33 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 33 gages with enough record, 2 are trending down and 1 up, and 2 carry a detected shift. The clearest is Bear Creek at Morrison, its annual mean flow changing -2.71 cfs per decade (-6.0% of its median annual flow) over 108 years (p=0.0002). The other 30 show no clear signal either way.

Drought history, cost, and the four-century context moved to the Drought tab.

Gage	Trend	Change / decade cfs · % of median annual flow	Significance	Years	Changepoint
▸ Bear Creek at Morrison BCRMORCO	↓ decreasing	-2.71 cfs -6.0%	p<0.001	108	~1949
▸ Bear Creek above Evergreen BCREVRCO	↓ decreasing	-4.14 cfs -13.6%	p=0.027	41	—
▸ Bear Creek at Sheridan BCRSHECO	↑ increasing	+1.67 cfs +4.6%	p=0.040	99	~1968

30 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. 32 gage(s) and 48 structure(s) report in 2026, but structure reporting only reached half its modern level around ~1975. 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)
1900s	1	0
1910s	1	0
1920s	1	0
1930s	2	0
1940s	2	0
1950s	2	15
1960s	2	14
1970s	2	20
1980s	3	26
1990s	4	17
2000s	6	18
2010s	6	30
2020s	29	46

Mass-balance (network closure) trend

Structure divrec-history backfill coverage as of the last check: 2% of 2331 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 (–)

Mass-balance kinks computed for every summer month back to (0 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.

No reach shows a statistically significant long-term gain/loss shift.

Groundwater now has its own tab: 332 monitored well(s), water-table trends, stream corridors, and the advisory depletion screen.

Reservoirs now has its own tab: 39 reservoir(s), end-of-year storage back to 1950, click-to-chart histories.

Cross-gage pattern fingerprint

Over the 42-year window with full coverage (1985–2026), the dominant shared pattern across 3 gage(s) explains 97% 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 2026-08-17)

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.

VAILE LAKE (diversion): +0.9 cfs (9% of that reach's correction)
NORGREN LAKE (diversion): +0.9 cfs (9% of that reach's correction)
MIDWAY LAKE (diversion): +0.9 cfs (9% of that reach's correction)
PATRICK RES (diversion): +0.9 cfs (9% of that reach's correction)
CIRCLE DITCH (diversion): +0.9 cfs (9% of that reach's correction)
UPPER TULE RES (diversion): +0.9 cfs (9% of that reach's correction)
LOWER TULE RES (diversion): +0.9 cfs (9% of that reach's correction)
FORT LOGAN MEMORIAL RESE (diversion): +0.9 cfs (9% of that reach's correction)
FORT LOGAN VETERANS RESE (diversion): +0.9 cfs (9% of that reach's correction)
MCBROOM DITCH (diversion): +0.9 cfs (9% 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 13 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	2% of schematic structures have data

Independent check: PASS — 100.0000% agreement across 132,685 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 — 99.72% day-level agreement with USGS's own published records for the same gages, across 6 co-listed station(s) and 94,783 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.

33 gage(s) / 184,867 daily values (1900-05-01–2026-08-17); 103 structure(s) with diversion records; 2058 with decreed rights. Methodology has not yet had independent expert review — treat every figure as an advisory screen, not an administrative or legal conclusion.

31,450 water-level measurements across 332 monitored well(s) — 77 alluvial, 52 bedrock — plus 0 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 14 well(s) with enough record for a trend test: 5 declining, 3 rising.

Fastest-declining wells	Setting	ft / decade	Span	p
▸ WP243773	unknown	-151.77	11 yr	0.0049
▸ WP233156	unknown	-15.79	21 yr	0.0075
▸ SC00607102BBD	alluvial	-8.36	10 yr	0.0127
▸ WP41198	alluvial	-1.0	21 yr	0.0321
▸ WP139298	unknown	-0.72	21 yr	0.0408

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.

39 reservoir(s) with 18,219 storage measurement(s), 1950–2025. Basin storage as of 2024-10-31 (the record's own end — reservoir records publish ~annually): 26,699 AF across 26 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)
▸ MARSTON RES (0903501)	18,271	2024-10-31	—	—	dossier →
▸ FROM WDID, SEE 0903501 (0803501)	6,652	1988-10-31	—	—	dossier →
▸ BEAR CREEK LAKE (0903999)	1,574	2024-10-31	—	—	dossier →
▸ BOWLES RESERVOIR (0904281)	1,235	2024-10-31	—	—	dossier →
▸ SODA LAKES(EAST) RES 2 (0903815)	1,207	2024-10-31	—	—	dossier →
▸ PATRICK RES (0904314)	1,097	2024-10-31	—	—	dossier →
▸ KENDALL RES (0904304)	720	1976-10-31	—	—	dossier →
▸ STARBUCK PARK RES 1 (0904317)	694	1980-10-31	—	—	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)	Median (in)	% of median	Typical peak
Echo Lake	10660	0.0	0.0	—	April 29 (9.0 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 (1999–2026)

A bad snow year here comes in two flavors (both called snow drought), and the river feels them differently. In 6 of the last 28 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 32% of median.

The snow never came: 2002, 2006, 2012, 2018, 2022, 2026. The snow left early: 2009.

Computed by this site from 1 SNOTEL site’ full daily records (NRCS AWDB, back to 1999). 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 — Bear Ck ab Evergreen

NRCS's final issue (2026-06-01) calls it even odds that at least 7 kAF arrives over 06-01 to 09-30 — 66% of a normal season; almost certainly at least 4, probably not more than 12. Our own record at this gage shows 2 kAF so far this period (partial record: 78 of 93 days). New forecasts begin in January. How to read these numbers →

We test a record-based adjustment of the April benchmark at every graded point. Here it did not beat NRCS over 22 replayed seasons (34% typical miss unadjusted vs 35% adjusted), so none is shown — NRCS’s own forecast, unadjusted, is the best April benchmark available for this river. Why we test →

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
4	6	7	9	12	10	2*

How good are these forecasts here? (2004–2025)

Grading every April issue against what the river then delivered, measured at this gage’s own record — 22 seasons: the median miss of the 50% forecast is 34%, with a high bias of 21%, and the observed volume landed inside the stated 10–90% band 68% 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 (1999–2026)

Across 28 measured years, the season’s water has loosely followed the April snowpack: a year opening April with 80% of median snow has typically gone on to deliver about 81% of a normal season (a snow-to-runoff elasticity of 0.7). In warm, early-melt years the river delivered a median of 89% of a normal season, against 101% in typical years — the timing of the melt matters, not just its size. This year opened April at 3% of median snow and delivered 24% 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.

Right now

This is the 13th-driest week 33 in 109 years of record at BEAR CREEK AT MORRISON (as of 2026-08-10; this week’s flow sits at the 12th percentile for the date). On this week’s US Drought Monitor, Arapahoe County is 38% in D3 extreme drought (2026-08-25). The law agrees: the most senior active call leaves 97% of this district’s decreed flow rights junior to the calling right this week.

Every year since 1900, week by week

Each thin row is a year at BEAR CREEK AT MORRISON; each cell is one week’s flow ranked against the same calendar week of every other year — warm means dry for the date, blue wet, so seasonality cancels and droughts appear as warm bands. Gaps are missing record, never a dry river. Click a year to reconstruct it on the Historical tab.

The Drought Monitor’s view since 2000

Mean share of area in each class across Arapahoe, Jefferson counties — the counties this district’s gages sit in, which overlap the district imperfectly. The Drought Monitor weighs soils, vegetation and local reports; it is CONTEXT beside the river’s own record above, not the water-rights picture.

The law’s own drought gauge

When water runs short, administration answers: calls reach further back in time, and more decreed rights go junior to the calling right. This is that response, weekly since 2005 — the share of this district’s decreed flow rights junior to the most senior active call. Watch it spike in the named droughts below, and linger after the river recovers.

Computed from DWR’s call record (1375 calls touching this district) against the district’s rights index. Scoping is deliberately coarse — a call’s own district, or districts named in its comments — and this is administration’s RESPONSE, not a per-structure verdict (each dossier’s curtailment card does that, with stream miles). A deepening call can also reflect growing demand, not only shrinking supply.

This basin’s droughts, by its own record

Drought	Span	Weeks	Trough percentile	Recovery
unnamed dry spell	2025-08-04 → 2026-02-23	29	23rd (2025-09-15)	not yet
unnamed dry spell	2024-10-14 → 2025-05-19	31	21st (2024-12-09)	not yet
the 2020-22 drought	2023-02-06 → 2023-08-14	27	18th (2023-04-24)	4 weeks
the 2020-22 drought	2022-01-03 → 2022-08-08	31	20th (2022-02-21)	57 weeks
the 2020-22 drought	2019-12-23 → 2021-08-23	87	2nd (2021-02-01)	2 weeks
the 2018 drought	2018-06-11 → 2019-09-02	64	4th (2018-12-31)	105 weeks
the 2018 drought	2016-11-14 → 2017-07-31	37	15th (2017-01-30)	14 weeks
the 2012-13 drought	2012-06-25 → 2013-11-04	71	10th (2012-10-22)	0 weeks
the 2012-13 drought	2010-11-22 → 2012-04-02	71	19th (2011-06-27)	81 weeks
unnamed dry spell	2008-09-22 → 2009-06-29	40	26th (2008-11-24)	50 weeks
unnamed dry spell	2006-06-12 → 2007-01-01	29	22nd (2006-09-04)	5 weeks
the 2002 drought	2002-04-08 → 2003-06-23	63	4th (2002-09-23)	2 weeks
unnamed dry spell	2000-09-11 → 2001-04-30	33	17th (2000-11-13)	114 weeks
unnamed dry spell	1994-09-26 → 1995-05-01	31	19th (1994-11-21)	6 weeks

Detected mechanically: the 26-week smoothed percentile below the 30th for at least 20 weeks; recovered on regaining the 50th. The knobs are stated because the episode list depends on them — a different reasonable choice merges or splits episodes at the edges. Names are attached where an episode overlaps a drought Colorado already talks about.

What drought has cost here

Since 1991, federal crop insurance has paid $26,221,370 in drought-caused claims across Arapahoe, Jefferson counties — 55.7% of all insured crop losses there. The worst year was 2022 ($3,834,767).

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.

New to how a dry winter becomes a call on the river? Anatomy of a drought walks the chain in four minutes — snow to rivers to reservoirs to calls to the water table.

Decreed rights on this network run from 1859-11-01 to 2023-09-29. Of the 20 structures with a yield estimate, the median one’s senior right was in priority 81% of a median irrigation season and 31% in a dry one. 9 abandonment screens and 13 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: 2561 across 2058 structure(s); 0 structure(s) carry 0 court-case references. Advisory reading aids on public DWR data — not administrative or legal conclusions.

Is the river getting harder to divert from?

Over 1951–2025, administration on this district has been tightening: 2 of 3 measures (days under call, calls set, seniority of the controlling call) are moving toward more administration, none the other way.

The three measures, year by year

One row per whole calendar year inside the call record's coverage (75 years); partly-covered years are omitted rather than reported as quiet. Trend is Mann-Kendall with the same significance gate as every other trend on this site. Counted from DWR's published call record, which begins in the early 2000s: earlier years are absent, not quiet. A rise in the number of calls set can also reflect how finely an administrator records one episode, which is why days under call -- insensitive to that -- is the component to read first. Advisory summary of the public record, not an administrative finding.

Year	Days under call	Calls set	Controlling priority (median)
2014	309	220	1873-06-30
2015	329	144	1870-06-01
2016	366	202	1869-06-01
2017	365	261	1878-09-06
2018	365	315	1874-05-01
2019	365	294	1881-02-01
2020	366	230	1867-04-15
2021	360	192	1867-04-15
2022	365	245	1867-04-15
2023	331	237	1869-04-01
2024	366	223	1878-09-18
2025	365	361	1876-05-10

Right yield — how often could these rights actually divert?

Share of irrigation-season days each structure's rights were not called out, derived from the 22-year district-scoped call record (senior right = floor, junior right = ceiling constraint). Call-record-derived; DWR's own analysis governs where available.

Structure	Senior priority	Senior right: median / dry yr	Junior right: median / dry yr
HARRIMAN DITCH (0900731) DWR↗	1861-06-01	100.0% / 82.2%	5.1% / 0.0%
WARRIOR/HARRIMAN D TK CR (0900903) DWR↗	1862-04-16	100.0% / 51.9%	23.8% / 0.0%
0903687 DWR↗	1874-05-01	58.0% / 16.8%	5.1% / 0.0%
BERGEN DITCH (0900535) DWR↗	1874-05-01	58.0% / 16.8%	46.8% / 2.3%
BERGEN DITCH WEAVER CR (0901003) DWR↗	1885-10-24	46.8% / 2.3%	46.8% / 2.3%
WARD DITCH (0900958) DWR↗	1861-12-01	100.0% / 61.2%	46.8% / 4.7%
BROOKS DITCH (0900557) DWR↗	1898-03-15	20.1% / 0.0%	20.1% / 0.0%
WARRIOR DITCH (0900963) DWR↗	1860-12-25	100.0% / 84.1%	100.0% / 41.1%
MCBROOM DITCH (0900816) DWR↗	1859-11-01	100.0% / 100.0%	5.1% / 0.0%
PIONEER UNION DITCH (0900862) DWR↗	1861-06-01	100.0% / 82.2%	5.1% / 0.0%
LEWIS STROUSE DITCH (0900787) DWR↗	1863-03-01	100.0% / 44.4%	100.0% / 44.4%
BEAR CR MIN FLOW (0902115) DWR↗	1994-11-03	5.1% / 0.0%	5.1% / 0.0%

Abandonment radar (9 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 ~1975 — idleness that begins before then may be unreported use, not nonuse (flagged † below).

OLSON BELL DITCH (0900995) DWR↗ (1862-03-15, 6.3 cfs decreed): last active 1956 — 50 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1975) -- early absence of record is weak evidence of nonuse
CHURN DITCH (0900576) DWR↗ (1870-04-15, 0.3 cfs decreed): last active 1973 — 33 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1975) -- early absence of record is weak evidence of nonuse
SPICKERMAN MIDDLE DITCH (0900902) DWR↗ (1862-11-01, 5.2 cfs decreed): last active 1977 — 29 years idle
HINDRY DITCH (0900747) DWR↗ (1862-04-15, 3.9 cfs decreed): last active 1984 — 22 years idle
LEWIS STROUSE DITCH (0900787) DWR↗ (1863-03-01, 15.9 cfs decreed): last active 1984 — 22 years idle
WILLOW SPRINGS RES C1081 (0903332) DWR↗ (1963-11-29, 0.0 cfs decreed): last active 1988 — 18 years idle
KINGFISHER LAKE C702 (0904297) DWR↗ (1955-03-15, 0.0 cfs decreed): last active 1988 — 18 years idle
SODA LAKES(WEST) RES 1 (0904315) DWR↗ (1861-12-01, 0.0 cfs decreed): last active 1992 — 14 years idle
QUAINTANCE RES (0903749) DWR↗ (1861-12-01, 0.0 cfs decreed): last active 1996 — 10 years idle

Compliance screens (13 advisory flags)

Screened 49 of 2058 structures with rights (68 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.

BEAR CREEK LAKE (0903999) DWR↗: Observed p99 daily rate 294.8 cfs (max 542.7) exceeds total decreed absolute 1.0 cfs across 5556 recorded day(s).
WARRIOR DITCH (0900963) DWR↗: Observed p99 daily rate 30.0 cfs (max 50.0) exceeds total decreed absolute 25.2 cfs across 28262 recorded day(s).
SODA LAKES(WEST) RES 1 (0904315) DWR↗: Observed p99 daily rate 29.2 cfs (max 38.0) exceeds total decreed absolute 0.0 cfs across 984 recorded day(s).
PIONEER UNION DITCH (0900862) DWR↗: Observed p99 daily rate 18.0 cfs (max 35.0) exceeds total decreed absolute 17.4 cfs across 36401 recorded day(s).
SPICKERMAN MIDDLE DITCH (0900902) DWR↗: Observed p99 daily rate 6.0 cfs (max 6.0) exceeds total decreed absolute 5.2 cfs across 1276 recorded day(s).
HINDRY DITCH (0900747) DWR↗: Observed p99 daily rate 5.0 cfs (max 32.0) exceeds total decreed absolute 3.9 cfs across 9546 recorded day(s).
HODGSON DITCH (0900752) DWR↗: Observed p99 daily rate 5.0 cfs (max 8.0) exceeds total decreed absolute 1.7 cfs across 25102 recorded day(s).
HARRIMAN DITCH LEFT IN STREAM AT HEADGAT (0902950) DWR↗: Observed p99 daily rate 3.2 cfs (max 6.4) exceeds total decreed absolute 2.1 cfs across 7683 recorded day(s).
A ROONEY DERBY SPG 10 (0900500) DWR↗: Observed p99 daily rate 2.2 cfs (max 2.2) exceeds total decreed absolute 0.1 cfs across 818 recorded day(s).
CHURN DITCH (0900576) DWR↗: Observed p99 daily rate 2.0 cfs (max 2.0) exceeds total decreed absolute 0.3 cfs across 892 recorded day(s).

Seniority (top structures by decreed rate)

Structure	Senior priority date	Rights	Decreed abs (cfs)	Decreed abs (AF)	Conditional?
HARRIMAN DITCH (0900731) DWR↗	1861-06-01	25	1123.5	0	—
WARRIOR/HARRIMAN D TK CR (0900903) DWR↗	1862-04-16	10	207.4	0	—
0903687 DWR↗	1874-05-01	10	155.8	1638	—
BERGEN DITCH (0900535) DWR↗	1874-05-01	4	68.8	0	—
BERGEN DITCH WEAVER CR (0901003) DWR↗	1885-10-24	1	44.1	0	—
WARD DITCH (0900958) DWR↗	1861-12-01	10	27.5	30	—
BROOKS DITCH (0900557) DWR↗	1898-03-15	1	27.0	0	—
WARRIOR DITCH (0900963) DWR↗	1860-12-25	6	25.2	22	—
MCBROOM DITCH (0900816) DWR↗	1859-11-01	2	18.1	0	yes
PIONEER UNION DITCH (0900862) DWR↗	1861-06-01	9	17.4	0	—
LEWIS STROUSE DITCH (0900787) DWR↗	1863-03-01	1	15.9	0	—
BEAR CR MIN FLOW (0902115) DWR↗	1994-11-03	1	14.9	0	—
GATES PIPELINE (0900663) DWR↗	1924-09-01	1	14.0	0	—
INDEPENDENT HIGHLINE DITCH (0900767) DWR↗	1862-11-01	7	12.7	0	yes
EVERGREEN WATER SYS (0900994) DWR↗	1860-12-25	7	12.0	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
STEIGER WELL	37-92-308(5) PLANS LESS THAN 5 YEARS	Approved	2026-03-31	—	plan file
HICKS NO. 1 DITCH ALTERNATE POINT	37-92-308(4) PLAN PENDING COURT APPLICATION	Approved	2026-04-30	0902625	plan file
HOLCIM MORRISON QUARRY	37-92-308(4) PLAN PENDING COURT APPLICATION	Approved	2027-07-31	—	plan file
MOUNT VERNON COUNTRY CLUB METRO DISTRICT	37-92-308(5) PLANS LESS THAN 5 YEARS	Pending	—	—	plan file
RED ROCKS COUNTRY CLUB - WILLOW SPRINGS RESERVOIR	37-92-308(5) PLANS LESS THAN 5 YEARS	Pending	—	—	plan file
EXPERIENCE INSTITUTE COLORADO	37-92-308(5) PLANS LESS THAN 5 YEARS	Withdrawn	—	—	plan file

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.

Gage ⇅	Station ⇅	Avg cfs Aug 10–Aug 16 ⇅	% Hist Median ⇅	Rank ⇅	Δ1wk ⇅	Δ4wk ⇅	Yrs ⇅	Status ⇅
BCROUTCO	BEAR CREEK RESERVOIR (OUTFLOW)	1.2	7%	0	+1	-0	27.9	SHORT_RECORD
0900862A	PIONEER UNION DITCH	1.4	65%	0	-1	-1	5.0	SHORT_RECORD
BEROUTCO	BEERS SISTER RESERVOIR OUTLET	0.0	0%	0	+0	+0	7.7	SHORT_RECORD
BP2OUTCO	BUCHANAN POND 2 OUTFLOW	0.0	0%	0	+0	+0	7.4	SHORT_RECORD
EVRWATCO	EVERGREEN WATER SYSTEM	1.7	75%	0	-0	-0	6.1	SHORT_RECORD
EVRBYPCO	EVERGREEN WATER SYSTEM BYPASS RETURN	0.0	0%	0	+0	+0	6.1	SHORT_RECORD
0900535A	BERGEN DITCH	0.0	0%	0	+0	+0	2.6	SHORT_RECORD
0904274A	BERGEN #1 WEST RESERVOIR INFLOW	0.0	0%	0	+0	+0	4.0	SHORT_RECORD
0900903A	WARRIOR/HARRIMAN DITCH TURKEY CRK HG	0.0	0%	0	+0	+0	3.1	SHORT_RECORD
0904281B	BOWLES RESERVOIR OUTLET	0.7	54%	0	-2	+1	2.4	SHORT_RECORD
0900767A	RRCC INDEPENDENT HL	0.2	64%	33	+0	+0	2.7	SHORT_RECORD
MCBDITCO	MCBROOM DITCH	1.3	98%	41	+0	+0	10.9	SHORT_RECORD
0900752A	HODGSON DITCH	0.4	100%	50	+0	+0	3.1	SHORT_RECORD
TURBCRCO	TURKEY CREEK ABOVE BEAR CREEK LAKE NEAR MORRISON	2.0	102%	50	+2	+1	10.9	SHORT_RECORD
WRDDITCO	WARD DITCH	3.9	105%	56	+4	+4	6.8	SHORT_RECORD
HRRDITCO	HARRIMAN DITCH	8.0	107%	61	+6	+6	10.6	SHORT_RECORD
0904295A	HARRIMAN RESERVOIR OUTFLOW	0.8	198%	64	-1	-2	3.2	SHORT_RECORD
0802901A	MCBROOM DITCH TAIL RETURN	0.8	106%	65	+0	+0	3.1	SHORT_RECORD
SODATCCO	SODA LAKES OUTLET TO TURKEY CREEK	1.7	232%	79	+0	+0	5.9	SHORT_RECORD
WARDITCO	WARRIOR DITCH	5.3	104%	91	+2	+2	9.8	SHORT_RECORD
SODAINCO	SODA LAKES INFLOW	3.0	754%	100	+3	+3	5.8	SHORT_RECORD
SODA15CO	SODA LAKES OUTLET TO CONDUIT 15	0.8	0%	100	+0	-1	5.8	SHORT_RECORD
GENMPLCO	GENESEE MOUNTAIN PL	1.0	116%	100	+0	+0	5.4	SHORT_RECORD
0902251A	JOHNSON LATERAL PINEHURST INFLOW	3.2	182%	100	+1	+1	4.8	SHORT_RECORD
0900955A	BBF POND INLET	0.8	113%	100	+0	+0	2.7	SHORT_RECORD
0903343A	BBF POND OUTLET	1.0	129%	100	+0	+0	2.7	SHORT_RECORD
0904281A	BOWLES RESERVOIR INLET	0.4	478%	100	+0	+0	2.4	SHORT_RECORD
0902966A	EMD TROUBLESOME CREEK ABOVE WWTP	0.1	114%	100	+0	+0	1.5	SHORT_RECORD
BCREVRCO	BEAR CREEK ABOVE EVERGREEN, CO	15.5	45%	0	+10	+10	42.0	OK
BCRMORCO	BEAR CREEK AT MORRISON	17.5	42%	4	+13	+13	108.5	OK
BCRABCCO	BEAR CREEK ABOVE BEAR CREEK LAKE NEAR MORRISON, CO	5.7	33%	21	+2	+1	30.8	OK
BCRSHECO	BEAR CREEK AT SHERIDAN	13.6	66%	34	+9	+8	99.5	OK