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Fountain Creek

Division 2 · Water District 10 · As of 2026-08-19 03:00 MDT

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Reconstruct conditions as of

Evolution of the network

Gage flow trend & changepoints

What counts as a trend here

Computed 2026-08-20 08:31 from 79 gage(s) with cached period-of-record data. Mann-Kendall (trend) 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.”

Of the 79 gages with enough record, 7 are trending down and 12 up, and 16 carry a detected shift. The clearest is FOUNTAIN CREEK AT PUEBLO, CO., +22.8 points of its long-term median per decade over 83 years (p<0.0001). The other 60 show no clear signal either way.

Gage	Trend	Change / decade points of median	Significance	Years	Changepoint
▸ MONUMENT CREEK BELOW MONUMENT LAKE NEAR MONUMENT MONBMNCO	↓ decreasing	-345.3	p=0.001	21	~2016
▸ TURKEY CREEK AB TELLER RES NEAR STONE CITY, CO. TURTELCO	↓ decreasing	-257.0	p=0.015	28	~2000
▸ WOMACK DITCH FROM L. FOUNTAIN CR NR FT. CARSON, CO WOMDITCO	↓ decreasing	-105.9	p=0.000	27	~2009
▸ CHILCOTT DITCH AUG STATION NEAR FOUNTAIN, CO CHIAUGCO	↑ increasing	+102.4	p=0.044	20	~2013
▸ MERRIAMS ROCK CREEK DITCH AT FT. CARSON, CO ROCDITCO	↓ decreasing	-84.5	p=0.000	27	~2010
▸ WEST MONUMENT CREEK AT U.S. AIR FORCE ACADEMY, CO MONAIRCO	↑ increasing	+58.3	p=0.000	57	~1994
▸ COTTONWOOD CREEK AT WOODMEN RD NR COLO SPRINGS, CO COCRWOCO	↑ increasing	+33.5	p=0.007	35	—
▸ CHILCOTT DITCH NEAR FOUNTAIN, CO CHIDITCO	↓ decreasing	-24.3	p=0.035	20	~2019
▸ FOUNTAIN CREEK AT PUEBLO, CO. FOUPUECO	↑ increasing	+22.8	p=0.000	83	~1979
▸ FOUNTAIN MUTUAL DITCH NEAR COLORADO SPRINGS, CO FOMDITCO	↑ increasing	+16.9	p=0.018	22	—
▸ FOUNTAIN CREEK AT SECURITY, CO FOUSECCO	↑ increasing	+16.5	p=0.000	62	~1982
▸ JIMMY CAMP CREEK AT FOUNTAIN, CO. JIMCAMCO	↓ decreasing	-15.3	p=0.012	51	~2001
▸ FOUNTAIN CREEK NEAR PINON, CO FOUPINCO	↑ increasing	+14.4	p=0.015	54	~1993
▸ FOUNTAIN CREEK NEAR FOUNTAIN, CO. FOUFOUCO	↑ increasing	+13.0	p=0.000	58	~1993
▸ FOUNTAIN CREEK AT COLORADO SPRINGS, CO FOUACSCO	↑ increasing	+11.7	p=0.023	51	—
▸ COTTONWOOD CREEK AT MOUTH AT PIKEVIEW, CO COCRPICO	↑ increasing	+10.1	p=0.015	41	~1994
▸ WEST MONUMENT CREEK BELOW RAMPART RESERVOIR, CO MONRAMCO	↓ decreasing	-8.5	p=0.007	33	~2001
▸ MONUMENT CREEK AT PIKEVIEW, CO. MONPIKCO	↑ increasing	+8.1	p=0.001	62	~1982
▸ FOUNTAIN CREEK NEAR COLORADO SPRINGS, CO. FOUNCOCO	↑ increasing	+7.7	p=0.010	69	~1979

60 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. 52 gage(s) and 100 structure(s) report in 2026, but structure reporting only reached half its modern level around ~1969. 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)
1890s	0	1
1920s	0	52
1930s	0	48
1940s	3	42
1950s	3	17
1960s	4	46
1970s	6	65
1980s	22	48
1990s	24	74
2000s	44	94
2010s	49	90
2020s	49	99

Mass-balance (network closure) trend

Structure divrec-history backfill coverage as of the last check: 5% of 1637 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 (3760 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.

LITTLE FOUNTAIN CREEK NEAR FORT CARSON, CO.: reach shifted from -63 cfs to -190 cfs summer mean (more losing, p=0.001, 14 yr) [sedimentary plains/foothills: moderate groundwater connectivity -- gain/loss shifts can be real aquifer response; corroborate with nearby well records]
JIMMY CAMP CREEK AT FOUNTAIN, CO.: reach shifted from -122 cfs to -10 cfs summer mean (more gaining, p=0.000, 51 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [measurement-evolution caution: this shift co-moves with the growth of the gage/metering network (rho=0.64) -- part of it may be unaccounted water becoming accounted, not hydrologic change] [31 alluvial wells within 2 mi of the gage; pooled water table -4.2 ft (1953–2018, decreasing)]
FOUNTAIN CREEK AT PUEBLO, CO.: reach shifted from +26 cfs to +200 cfs summer mean (more gaining, p=0.000, 69 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [measurement-evolution caution: this shift co-moves with the growth of the gage/metering network (rho=0.4) -- part of it may be unaccounted water becoming accounted, not hydrologic change] [33 alluvial wells within 2 mi of the gage; pooled water table -7309.1 ft (1962–2018, decreasing)]
FOUNTAIN CR BLW JANITELL RD BLW COLO. SPRINGS, CO: reach shifted from +106 cfs to +113 cfs summer mean (more gaining, p=0.027, 37 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [measurement-evolution caution: this shift co-moves with the growth of the gage/metering network (rho=0.5) -- part of it may be unaccounted water becoming accounted, not hydrologic change] [35 alluvial wells within 2 mi of the gage; pooled water table +1395.7 ft (1977–2024, increasing)]
FOUNTAIN CREEK AT SECURITY, CO: reach shifted from +75 cfs to +155 cfs summer mean (more gaining, p=0.000, 62 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [48 alluvial wells within 2 mi of the gage; pooled water table +2.3 ft (1954–2024, no_trend)]
FOUNTAIN CREEK NEAR FOUNTAIN, CO.: reach shifted from +94 cfs to +182 cfs summer mean (more gaining, p=0.018, 46 yr) [alluvial valley: real alluvial aquifer -- a decades-long shift toward losing is the classic signature of alluvial pumping and urbanization] [measurement-evolution caution: this shift co-moves with the growth of the gage/metering network (rho=0.43) -- part of it may be unaccounted water becoming accounted, not hydrologic change] [47 alluvial wells within 2 mi of the gage; pooled water table -0.9 ft (1954–1999, no_trend)]

Groundwater now has its own tab: 2001 monitored well(s), water-table trends, stream corridors, and the advisory depletion screen.

Reservoirs now has its own tab: 76 reservoir(s), end-of-year storage back to 1919, click-to-chart histories.

Cross-gage pattern fingerprint

Over the 57-year window with full coverage (1970–2026), the dominant shared pattern across 3 gage(s) explains 65% of year-to-year variance (almost certainly a basin-wide climate/snowpack driver).

MONAIRCO doesn't move with that shared pattern -- a real, localized signal (a new diversion, land-use change, or a gage-specific data problem) worth a closer look, not necessarily noise.

Structures most implicated by reconciliation (as of 2026-07-06)

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.

FRY-ARK RETURN FLOWS (return): -9.4 cfs (100% of that reach's correction)

Data provenance & quality

Where these numbers come from and how far they can be trusted. Grade C (3/6 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 45 day(s) old (target 7)
diversion record	expected-lag	newest diversion record is 293 day(s) old (DWR publishes ~1 year in arrears)
structure coverage	sparse	5% of schematic structures have data

Independent check: PASS — 100.0000% agreement across 140,347 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 — 99.17% day-level agreement with USGS's own published records for the same gages, across 53 co-listed station(s) and 527,824 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.

79 gage(s) / 650,706 daily values (1922-01-01–2026-07-06); 368 structure(s) with diversion records; 2864 with decreed rights. Methodology has not yet had independent expert review — treat every figure as an advisory screen, not an administrative or legal conclusion.

52,236 water-level measurements across 2001 monitored well(s) — 687 alluvial, 944 bedrock — plus 32 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 264 well(s) with enough record for a trend test: 102 declining, 55 rising.

Fastest-declining wells	Setting	ft / decade	Span	p
▸ DB-102 MONUMENT WELL 2	bedrock	-246.03	31 yr	0.0001
▸ WOODMOOR W.D. #10	bedrock	-208.0	27 yr	0.0
▸ DB-109 DONALA 14A	bedrock	-193.36	16 yr	0.0
▸ DB-128 FOREST LAKES METRO	bedrock	-156.95	47 yr	0.0
▸ DB-119 PALMER LAKE A-2	bedrock	-137.69	22 yr	0.0002
▸ DB-102 MONUMENT WELL 7	bedrock	-116.5	16 yr	0.0007
▸ DB-102 MONUMENT WELL 8	bedrock	-113.88	28 yr	0.0004
▸ DB-119 (1987-2022)	bedrock	-79.0	33 yr	0.0062

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.

LITTLE FOUNTAIN CREEK NEAR FORT CARSON, CO.: 2 alluvial well(s) nearby

JIMMY CAMP CREEK AT FOUNTAIN, CO.: 31 alluvial well(s) nearby; pooled water table -4.2 ft (1953–2018, decreasing, p=0.0007). Glover screen: 0.3 cfs of nearby metered alluvial pumping → est. lagged depletion 0.2–0.3 cfs (uncalibrated T/S ranges; flagged for SPDSS calibration, AWAS cross-check, and expert review — DWR's AWAS is the authority).

FOUNTAIN CREEK AT PUEBLO, CO.: 33 alluvial well(s) nearby; pooled water table -7309.1 ft (1962–2018, decreasing, p=0.0)

FOUNTAIN CR BLW JANITELL RD BLW COLO. SPRINGS, CO: 35 alluvial well(s) nearby; pooled water table +1395.7 ft (1977–2024, increasing, p=0.0064). Glover screen: 0.0 cfs of nearby metered alluvial pumping → est. lagged depletion 0.0–0.0 cfs (uncalibrated T/S ranges; flagged for SPDSS calibration, AWAS cross-check, and expert review — DWR's AWAS is the authority).

FOUNTAIN CREEK AT SECURITY, CO: 48 alluvial well(s) nearby; pooled water table +2.3 ft (1954–2024, no_trend, p=0.7885)

FOUNTAIN CREEK NEAR FOUNTAIN, CO.: 47 alluvial well(s) nearby; pooled water table -0.9 ft (1954–1999, no_trend, p=0.5876). Glover screen: 2.1 cfs of nearby metered alluvial pumping → est. lagged depletion 1.8–2.1 cfs (uncalibrated T/S ranges; flagged for SPDSS calibration, AWAS cross-check, and expert review — DWR's AWAS is the authority).

CHEYENNE CREEK AT EVANS AVE AT COLORADO SPRINGS,CO: 4 alluvial well(s) nearby

ROCK CREEK ABOVE FORT CARSON RESERVATION, CO.: 4 alluvial well(s) nearby; pooled water table +0.5 ft (1981–1997, no_trend, p=0.4995)

BEAR CREEK NEAR COLORADO SPRINGS, CO: 0 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.

76 reservoir(s) with 56,672 storage measurement(s), 1919–2026. Basin storage as of 2025-10-31 (the record's own end — reservoir records publish ~annually): 41,347 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.

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 reservoir to chart its full storage history.

Reservoir	Last recorded storage (AF)	As of
▸ RAMPART RESERVOIR (1003670)	27,153	2025-10-01
▸ CATAMOUNT CR WTR SYS R1 (1003643)	9,690	1970-11-01
▸ NORTH CATAMOUNT RES (1003673)	7,912	2025-10-01
▸ MCELROY RESERVOIR (1003534)	2,214	1976-07-16
▸ FOUNTAIN VALLEY RES NO 2 (1003641)	1,382	2025-10-31
▸ BRISTLECONE RES. NO 2 (1003906)	1,159	2025-10-31
▸ LAKE MORAINE RESERVOIR (1003654)	718	2025-10-01
▸ MANITOU RESERVOIR (1003657)	710	2025-10-01

Decreed rights on this network run from 1860-02-20 to 2023-06-02. Of the 20 structures with a yield estimate, the median one’s senior right was in priority 82% of a median irrigation season and 25% in a dry one. 10 abandonment screens and 38 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: 3557 across 2864 structure(s); 86 structure(s) carry 0 court-case references. Advisory reading aids on public DWR data — not administrative or legal conclusions.

Why diversions stopped — call-based explanations

Sustained diversion stops matched to senior administrative calls.

MONUMENT CREEK PIPELINE (1000506) stopped 2025-10-09 (22+ days) — call at CANON HEIGHTS DITCH curtailing 87% of its decreed rate [heuristic-partial]
CHILCOTT DITCH (1000593) stopped 2025-09-17 (5+ days) — call at HOEHNE DITCH curtailing 100% of its decreed rate [heuristic-partial]
TALCOTT & COTTON DITCH (1000568) stopped 2025-08-31 (22+ days) — call at MODEL DITCH curtailing 100% of its decreed rate [heuristic-strong]
COLO SPRINGS PIPELINE (1000627) stopped 2025-08-24 (21+ days) — call at MODEL DITCH curtailing 100% of its decreed rate [heuristic-partial]
FRENCH CREEK DIVERSION (1000574) stopped 2025-08-21 (29+ days) — call at MODEL DITCH curtailing 68% of its decreed rate [heuristic-partial]
RUXTON CREEK PIPELINE (1000581) stopped 2025-08-21 (8+ days) — call at MODEL DITCH curtailing 88% of its decreed rate [heuristic-partial]
DIXON DITCH (1000541) stopped 2025-08-15 (25+ days) — call at HARDSCRABBLE DITCH curtailing 100% of its decreed rate [heuristic-strong]
BURKE DITCH (1000605) stopped 2025-07-31 (7+ days) — call at TITSWORTH DITCH curtailing 100% of its decreed rate [heuristic-strong]
TALCOTT & COTTON DITCH (1000568) stopped 2025-06-08 (12+ days) — call at LUCERO DITCH curtailing 66% of its decreed rate [heuristic-partial]
COLO SPRINGS PIPELINE (1000627) stopped 2025-06-02 (17+ days) — call at PULASKI DITCH curtailing 96% of its decreed rate [heuristic-partial]
OWEN & HALL DITCH (1000577) stopped 2025-05-31 (10+ days) — call at MODEL DITCH curtailing 67% of its decreed rate [heuristic-partial]
RIPLEY DITCH (1000559) stopped 2025-04-16 (18+ days) — call at HOEHNE DITCH curtailing 100% of its decreed rate [heuristic-strong]

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
FOUNTAIN MUTUAL CANAL (1000736)	1861-09-21	96.7% / 44.4%	0.0% / 0.0%
BARNES ET AL NT ARAPAHOE (1009031)	2009-06-24	0.0% / 0.0%	0.0% / 0.0%
EL PASO COUNTY CANAL (1000601)	1861-03-20	97.7% / 58.9%	0.0% / 0.0%
CHILCOTT DITCH (1000593)	1861-12-31	96.7% / 40.2%	0.0% / 0.0%
MESA PIPELINE (1000609)	1860-09-01	97.7% / 58.9%	0.0% / 0.0%
OWEN & HALL DITCH (1000577)	1862-12-31	71.0% / 24.8%	0.0% / 0.0%
COLO SPRINGS PIPELINE (1000627)	1861-03-21	97.7% / 58.9%	0.0% / 0.0%
AUSTIN BLUFFS PIPELINE (1000659)	1861-12-31	96.7% / 40.2%	0.0% / 0.0%
RUXTON CREEK PIPELINE (1000581)	1860-02-20	100.0% / 100.0%	0.0% / 0.0%
BEAR CREEK PIPELINE (1000535)	1861-12-31	96.7% / 40.2%	0.0% / 0.0%
NORTH SLOPE CONDUIT (1000884)	1901-12-31	0.0% / 0.0%	0.0% / 0.0%
MONUMENT CREEK PIPELINE (1000506)	1862-04-01	93.5% / 24.8%	0.0% / 0.0%

Abandonment radar (10 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 ~1969 — idleness that begins before then may be unreported use, not nonuse (flagged † below).

JACKSON & BURKE DITCH (1000806) (1873-03-21, 10.8 cfs decreed): last active 1929 — 62 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1969) -- early absence of record is weak evidence of nonuse
IRVINE DITCH (1000589) (1866-04-01, 1.8 cfs decreed): last active 1930 — 61 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1969) -- early absence of record is weak evidence of nonuse
HARMES DITCH (1000587) (1861-03-20, 3.7 cfs decreed): last active 1943 — 48 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1969) -- early absence of record is weak evidence of nonuse
NORTH CHEYENNE PIPELINE (1000608) (1890-03-01, 0.9 cfs decreed): last active 1950 — 41 years idle † predates modern reporting era — last recorded activity predates this basin's modern reporting era (~1969) -- early absence of record is weak evidence of nonuse
FORD WHITE DITCH NO 1 (1000730) (1888-04-13, 9.8 cfs decreed): last active 1970 — 21 years idle
H O P DITCH NO 2 (1000766) (1875-07-01, 2.0 cfs decreed): last active 1970 — 21 years idle
NORTHSIDE DITCH (1000612) (1892-11-11, 26.4 cfs decreed): last active 1971 — 20 years idle
BANNISTER DITCH (1000744) (1866-09-21, 2.6 cfs decreed): last active 1976 — 15 years idle
FOUNTAIN UNDERFLOW SYS (1000759) (1868-02-15, 13.8 cfs decreed): last active 1976 — 15 years idle
WEST TURF WELL NO 1 (1005864) (1974-01-23, 2.4 cfs decreed): last active 1976 — 15 years idle

Compliance screens (38 advisory flags)

Screened 124 of 2864 structures with rights (164 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.

TESTING WDID (NOT AN ACTUAL STRUCTURE) (1099999): Observed p99 daily rate 123.0 cfs (max 123.0) exceeds total decreed absolute 6.0 cfs across 622 recorded day(s).
BURKE DITCH (1000605): Observed p99 daily rate 16.9 cfs (max 66.2) exceeds total decreed absolute 7.7 cfs across 45810 recorded day(s).
JACKSON & BURKE DITCH (1000806): Observed p99 daily rate 15.0 cfs (max 20.0) exceeds total decreed absolute 10.8 cfs across 916 recorded day(s).
CASCADE CREEK DIVERSION (1000572): Observed p99 daily rate 13.0 cfs (max 51.4) exceeds total decreed absolute 5.0 cfs across 48943 recorded day(s).
TOM WANLESS DITCH (1000569): Observed p99 daily rate 12.0 cfs (max 17.5) exceeds total decreed absolute 7.5 cfs across 15775 recorded day(s).
LAUGHLIN DITCH (1000592): Observed p99 daily rate 11.6 cfs (max 31.1) exceeds total decreed absolute 11.5 cfs across 21085 recorded day(s). Structure holds an Augmentation-use decree -- diversions above the direct-flow decree can be lawful under plan operations; interpret with care.
SOUTH CATAMOUNT CREEK DIVERSION (1000576): Observed p99 daily rate 11.5 cfs (max 132.0) exceeds total decreed absolute 5.4 cfs across 50025 recorded day(s).
NORTH CATAMOUNT CREEK (1000575): Observed p99 daily rate 11.3 cfs (max 110.2) exceeds total decreed absolute 6.9 cfs across 46432 recorded day(s).
FRENCH CREEK DIVERSION (1000574): Observed p99 daily rate 11.1 cfs (max 54.2) exceeds total decreed absolute 2.8 cfs across 42778 recorded day(s).
ROBINSON DITCH (1000580): Observed p99 daily rate 11.1 cfs (max 110.0) exceeds total decreed absolute 10.4 cfs across 18774 recorded day(s). Structure holds an Augmentation-use decree -- diversions above the direct-flow decree can be lawful under plan operations; interpret with care.

Seniority (top structures by decreed rate)

Structure	Senior priority date	Rights	Decreed abs (cfs)	Decreed abs (AF)	Conditional?
FOUNTAIN MUTUAL CANAL (1000736)	1861-09-21	14	412.8	30	—
BARNES ET AL NT ARAPAHOE (1009031)	2009-06-24	2	330.0	2410	—
EL PASO COUNTY CANAL (1000601)	1861-03-20	6	104.2	0	—
CHILCOTT DITCH (1000593)	1861-12-31	12	83.0	734	—
MESA PIPELINE (1000609)	1860-09-01	10	49.7	0	—
OWEN & HALL DITCH (1000577)	1862-12-31	2	46.3	0	—
COLO SPRINGS PIPELINE (1000627)	1861-03-21	5	46.1	0	—
AUSTIN BLUFFS PIPELINE (1000659)	1861-12-31	9	44.9	0	—
RUXTON CREEK PIPELINE (1000581)	1860-02-20	6	39.1	0	—
BEAR CREEK PIPELINE (1000535)	1861-12-31	9	37.9	0	—
NORTH SLOPE CONDUIT (1000884)	1901-12-31	1	35.0	0	—
MONUMENT CREEK PIPELINE (1000506)	1862-04-01	4	30.1	0	—
NORTHSIDE DITCH (1000612)	1892-11-11	1	26.4	0	—
SOUTH CHEYENNE PIPELINE (1000537)	1860-09-01	9	23.8	0	—
TALCOTT & COTTON DITCH (1000568)	1864-12-31	2	17.8	0	—

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

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	CRUSE GULCH NEAR FOUNTAIN, CO (CRUGULCO)	31.2	142.9	0.0	-142.9	0.6	Unaccounted -142.9 cfs loss over 0.6 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	FOUNTAIN CREEK NEAR FOUNTAIN, CO. (FOUFOUCO)	42.5	0.1	142.8	+142.7	3.0	Unaccounted +142.7 cfs gain over 3.0 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	TALCOTT AND COTTON DITCH (TACODICO)	43.3	142.8	0.5	-142.3	0.8	Unaccounted -142.3 cfs loss over 0.8 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	FOUNTAIN CREEK AT SECURITY, CO (FOUSECCO)	30.6	6.3	142.9	+136.6	0.3	Unaccounted +136.6 cfs gain over 0.3 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	FOUNTAIN CR BLW JANITELL RD BLW COLO. SPRINGS, CO (FOUJANCO)	23.2	5.3	113.1	+107.8	0.3	Unaccounted +107.8 cfs gain over 0.3 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	SAND CREEK ABOVE MOUTH AT COLORADO SPRINGS, CO (SANCOLCO)	24.6	113.1	7.6	-105.4	1.4	Unaccounted -105.4 cfs loss over 1.4 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	FOUNTAIN CREEK AT 8TH STREET AT PUEBLO (FOUPU8CO)	72.6	4.0	93.5	+89.4	1.6	Unaccounted +89.4 cfs gain over 1.6 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	FOUNTAIN CREEK NEAR PINON, CO (FOUPINCO)	59.3	0.0	88.9	+88.9	0.7	Unaccounted +88.9 cfs gain over 0.7 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	MERRIAMS ROCK CREEK DITCH AT FT. CARSON, CO (ROCDITCO)	62.9	88.9	0.0	-88.9	3.6	Unaccounted -88.9 cfs loss over 3.6 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	CHEYENNE CREEK AT EVANS AVE AT COLORADO SPRINGS,CO (CHEEVACO)	20.9	53.1	1.5	-51.7	1.0	Unaccounted -51.7 cfs loss over 1.0 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	FOUNTAIN CREEK AT COLORADO SPRINGS, CO (FOUACSCO)	21.4	1.5	52.3	+50.8	0.4	Unaccounted +50.8 cfs gain over 0.4 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	FOUNTAIN CREEK AT MOUTH PUEBLO (FOUMOUCO)	74.1	93.5	45.1	-48.4	1.5	Unaccounted -48.4 cfs loss over 1.5 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	MONUMENT CREEK AT BIJOU ST. AT COLO. SPRINGS, CO (MONBIJCO)	20.0	10.1	53.1	+43.0	0.2	Unaccounted +43.0 cfs gain over 0.2 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	FOUNTAIN MUTUAL DITCH NEAR COLORADO SPRINGS, CO (FOMDITCO)	22.5	52.3	14.7	-37.6	1.1	Unaccounted -37.6 cfs loss over 1.1 mi. Returns in this reach with stale data (FRY-ARK RETURN FLOWS) — over-reporting elsewhere is also possible.
MAINSTEM	MONUMENT CREEK AT PIKEVIEW, CO. (MONPIKCO)	16.9	5.5	35.9	+30.4	0.1	Unaccounted +30.4 cfs gain over 0.1 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	MONUMENT CREEK AT PIKEVIEW, CO. (MONPIKCO)	17.0	35.9	8.3	-27.6	0.0	Unaccounted -27.6 cfs loss over 0.0 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	MONUMENT CREEK AT PIKEVIEW, CO. (MONPIKCO)	17.0	21.0	8.2	-12.9	0.0	Unaccounted -12.9 cfs loss over 0.0 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	MONUMENT CREEK AT PIKEVIEW, CO. (MONPIKCO)	17.0	8.3	21.0	+12.7	0.0	Unaccounted +12.7 cfs gain over 0.0 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	CHILCOTT DITCH AUG STATION NEAR FOUNTAIN, CO (CHIAUGCO)	39.3	12.2	2.2	-10.1	0.2	Unaccounted -10.1 cfs loss over 0.2 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	SPRING CREEK AUG STATION NEAR COLORADO SPRINGS, CO (SPRAUGCO)	22.9	14.7	5.3	-9.5	0.4	Unaccounted -9.5 cfs loss over 0.4 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	FOUNTAIN CREEK AT 8TH STREET (FOU8THCO)	19.8	0.8	10.1	+9.3	1.3	Unaccounted +9.3 cfs gain over 1.3 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	OWEN AND HALL DITCH (OWHLDTCO)	39.1	4.3	12.2	+7.9	7.6	Unaccounted +7.9 cfs gain over 7.6 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	ROCK CREEK ABOVE FORT CARSON RESERVATION, CO. (ROCAFOCO)	25.5	7.6	0.2	-7.5	0.9	Unaccounted -7.5 cfs loss over 0.9 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	BEAR CREEK NEAR COLORADO SPRINGS, CO (BEARCOCO)	18.5	8.2	0.8	-7.3	1.5	Unaccounted -7.3 cfs loss over 1.5 mi. No structure clearly responsible — possible ungaged diversion, channel seepage / phreatophyte loss, or evapotranspiration.
MAINSTEM	WEST MONUMENT CREEK BELOW RAMPART RESERVOIR, CO (MONRAMCO)	3.5	0.1	7.3	+7.2	3.2	Unaccounted +7.2 cfs gain over 3.2 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.
MAINSTEM	MCRAE AUGMENTATION STATION (FMIC) BELOW BIG JOHNSON RESERVOIR (MCRAUGCO)	30.4	0.2	6.3	+6.2	4.9	Unaccounted +6.2 cfs gain over 4.9 mi. Likely cause: stale/missing return data at SECURITY SEWAGE OUTFALL.
MAINSTEM	FOUNTAIN CREEK NEAR COLORADO SPRINGS, CO. (FOUNCOCO)	16.8	0.0	5.5	+5.5	0.7	Unaccounted +5.5 cfs gain over 0.7 mi. No structure clearly responsible — possible ungaged return flow, baseflow from groundwater, or unmodeled tributary inflow.

Gage ⇅	Station ⇅	Avg cfs Aug 10–Aug 16 ⇅	% Hist Median ⇅	Rank ⇅	Δ1wk ⇅	Δ4wk ⇅	Yrs ⇅	Status ⇅
CRUGULCO	CRUSE GULCH NEAR FOUNTAIN, CO	0.0	0%	0	+0	+0	0.0	NO_DATA
LIFOUNCO	LITTLE FOUNTAIN CREEK NEAR FOUNTAIN, CO.	0.0	0%	0	+0	+0	17.7	SHORT_RECORD
TURWESCO	TURKEY CR WEST SEEP BL TELLER RES NR STONE CITY,CO	0.0	0%	0	+0	+0	22.6	SHORT_RECORD
TUREASCO	TURKEY C EAST SEEP BL TELLER RES NR STONE CITY, CO	0.0	0%	0	+0	+0	22.6	SHORT_RECORD
LYTCARCO	LYTLE DITCH AT FT. CARSON, CO	0.0	6%	0	-0	-0	22.0	SHORT_RECORD
ROCDITCO	MERRIAMS ROCK CREEK DITCH AT FT. CARSON, CO	0.0	0%	0	+0	+0	27.0	SHORT_RECORD
SPRAUGCO	SPRING CREEK AUG STATION NEAR COLORADO SPRINGS, CO	5.3	58%	0	-4	-3	21.4	SHORT_RECORD
1000574A	FRENCH CREEK DIVERSION	1.2	30%	0	+0	+1	1.5	SHORT_RECORD
CHIDITCO	CHILCOTT DITCH NEAR FOUNTAIN, CO	2.2	22%	7	-6	-2	20.5	SHORT_RECORD
MONBMNCO	MONUMENT CREEK BELOW MONUMENT LAKE NEAR MONUMENT	0.1	18%	12	+0	+0	20.4	SHORT_RECORD
FOUPU8CO	FOUNTAIN CREEK AT 8TH STREET AT PUEBLO	93.5	63%	19	+52	+53	3.1	SHORT_RECORD
OWHLDTCO	OWEN AND HALL DITCH	12.2	92%	22	-2	-2	8.4	SHORT_RECORD
BURDITCO	BURKE DITCH NEAR PINON, CO	3.2	59%	27	-3	+3	21.3	SHORT_RECORD
RIPDITCO	RIPLEY DITCH FROM L. FOUNTAIN CR AT FT. CARSON, CO	0.0	16%	29	-0	+0	22.0	SHORT_RECORD
FOU8THCO	FOUNTAIN CREEK AT 8TH STREET	10.1	82%	32	+9	+9	7.0	SHORT_RECORD
SANCOLCO	SAND CREEK ABOVE MOUTH AT COLORADO SPRINGS, CO	7.6	49%	33	+7	+8	18.0	SHORT_RECORD
UPBVCRCO	UPPER BEAVER CREEK NEAR MONUMENT, CO	0.6	56%	33	+0	+0	22.2	SHORT_RECORD
TACODICO	TALCOTT AND COTTON DITCH	0.5	49%	34	-2	+0	18.2	SHORT_RECORD
WOMDITCO	WOMACK DITCH FROM L. FOUNTAIN CR NR FT. CARSON, CO	0.3	49%	34	+0	+0	27.0	SHORT_RECORD
CHIAUGCO	CHILCOTT DITCH AUG STATION NEAR FOUNTAIN, CO	2.3	61%	40	-6	-2	20.4	SHORT_RECORD
FOMDITCO	FOUNTAIN MUTUAL DITCH NEAR COLORADO SPRINGS, CO	14.7	87%	43	+0	+3	21.5	SHORT_RECORD
WDVDITCO	WOOD VALLEY DITCH NEAR PINON, CO	0.2	1567%	51	-2	+0	21.2	SHORT_RECORD
MONBIJCO	MONUMENT CREEK AT BIJOU ST. AT COLO. SPRINGS, CO	53.1	107%	52	+35	+36	23.3	SHORT_RECORD
MONWOOCO	MONUMENT CR ABV WOODMEN RD AT COLORADO SPRINGS, CO	21.0	106%	56	+11	+14	29.8	SHORT_RECORD
CLOWIDCO	CLOVER DITCH DRAIN NEAR WIDEFIELD, CO	4.3	121%	59	+1	+2	8.6	SHORT_RECORD
OWHALLCO	OWEN-HALL DITCH CODY AUG	0.4	216%	88	-0	-0	15.3	SHORT_RECORD
STODITCO	STROBEL DITCH FROM TURKEY CR AT FT. CARSON, CO	0.0	0%	100	+0	+0	22.4	SHORT_RECORD
MCRAUGCO	MCRAE AUGMENTATION STATION (FMIC) BELOW BIG JOHNSON RESERVOIR	6.3	0%	100	+1	-2	12.8	SHORT_RECORD
WLDHRSCO	WILD HORSE CREEK CONFLUENCE	4.0	112%	100	-0	+0	1.8	SHORT_RECORD
TURTELCO	TURKEY CREEK AB TELLER RES NEAR STONE CITY, CO.	0.0	0%	0	+0	+0	38.1	OK
FOUNCOCO	FOUNTAIN CREEK NEAR COLORADO SPRINGS, CO.	5.5	34%	0	+0	+1	68.3	OK
CAMPGOCO	CAMP CREEK AT GARDEN OF THE GODS, CO	0.0	0%	0	+0	+0	33.9	OK
JIMCAMCO	JIMMY CAMP CREEK AT FOUNTAIN, CO.	0.1	6%	0	-0	-0	50.5	OK
ROCAFOCO	ROCK CREEK ABOVE FORT CARSON RESERVATION, CO.	0.2	20%	10	+0	+0	42.6	OK
CHEEVACO	CHEYENNE CREEK AT EVANS AVE AT COLORADO SPRINGS,CO	1.5	37%	14	+0	+1	34.2	OK
FOUMOUCO	FOUNTAIN CREEK AT MOUTH PUEBLO	45.1	36%	17	+16	+11	35.6	OK
BEARCOCO	BEAR CREEK NEAR COLORADO SPRINGS, CO	0.8	63%	20	-0	+0	34.2	OK
FOUACSCO	FOUNTAIN CREEK AT COLORADO SPRINGS, CO	52.3	74%	33	+21	+33	50.5	OK
FOUPINCO	FOUNTAIN CREEK NEAR PINON, CO	88.9	64%	36	+32	+44	53.3	OK
FOUJANCO	FOUNTAIN CR BLW JANITELL RD BLW COLO. SPRINGS, CO	113.1	89%	41	+60	+57	36.7	OK
COCRPICO	COTTONWOOD CREEK AT MOUTH AT PIKEVIEW, CO	8.3	96%	48	+6	+6	40.5	OK
FOUSECCO	FOUNTAIN CREEK AT SECURITY, CO	142.9	118%	55	+65	+75	61.8	OK
FOUFOUCO	FOUNTAIN CREEK NEAR FOUNTAIN, CO.	142.8	118%	56	+66	+66	57.0	OK
MONPIKCO	MONUMENT CREEK AT PIKEVIEW, CO.	35.9	139%	66	+23	+28	61.5	OK
MONGATCO	MONUMENT C AB N.GATE BLVD AT USAF ACADEMY, CO.	8.4	156%	71	+7	+4	40.0	OK
MONAIRCO	WEST MONUMENT CREEK AT U.S. AIR FORCE ACADEMY, CO	3.5	345%	81	-0	+0	56.2	OK
MONRAMCO	WEST MONUMENT CREEK BELOW RAMPART RESERVOIR, CO	7.3	181%	100	-6	-8	32.6	OK
COCRWOCO	COTTONWOOD CREEK AT WOODMEN RD NR COLO SPRINGS, CO	8.2	311%	100	+6	+7	34.1	OK