North Platte River Basin

Evolution of the network

This year, in context

In the weeks around 2026-07-06 (the newest reading on file), flows at the 5 ranked gages are running at a median 30% of their own long-term norm for this window — 5 below a typical year, 0 at or above. Driest relative to its record: ILLINOIS RIVER NEAR RAND, ranking 1st lowest of 47 years.

How this comparison is made

Each gage's mean flow over the 3 days either side of 2026-07-06, 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 21:05 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, 3 are trending down and 0 up, and 2 carry a detected shift. The clearest is Illinois Creek at Walden, its annual mean flow changing -21.40 cfs per decade (-91.7% of its median annual flow) over 23 years (p=0.0043). The other 30 show no clear signal either way.

Gage	Trend	Change / decade cfs · % of median annual flow	Significance	Years	Changepoint
▸ Illinois Creek at Walden☆ ILLWALCO	↓ decreasing	-21.40 cfs -91.7%	p=0.004	23	~1933
▸ Michigan River at Walden☆ MICWLDCO	↓ decreasing	-15.82 cfs -34.5%	p=0.005	25	~1933
▸ Roaring Fork near Walden☆ ROAWALCO	↓ decreasing	-15.36 cfs -25.0%	p=0.045	23	—

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. 5 gage(s) and 387 structure(s) report in 2026, but structure reporting only reached half its modern level around ~1973. 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	7	0
1910s	1	0
1920s	6	0
1930s	10	0
1940s	10	0
1950s	4	32
1960s	2	0
1970s	4	344
1980s	4	412
1990s	4	436
2000s	5	482
2010s	6	428
2020s	5	291

Mass-balance (network closure) trend

Structure divrec-history backfill coverage as of the last check: 37% of 547 schematic-relevant structures. Kink count trend: no_trend (p=0.278), kink magnitude trend: no_trend (p=0.330) across 25 qualifying year(s).

Reach gain/loss shifts (1974–2026)

Mass-balance kinks computed for every summer month back to 1974 (244 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.

• MICHIGAN RIVER AT WALDEN, CO.: reach shifted from +13 cfs to -47 cfs summer mean (more losing, p=0.012, 24 yr) [sedimentary uplands: moderate groundwater connectivity -- gain/loss shifts can be real aquifer response; corroborate with nearby well records] [2 alluvial wells within 2 mi of the gage; pooled water table -0.1 ft (1976–2024, no_trend)]

Groundwater now has its own tab: 52 monitored well(s), water-table trends, stream corridors, and the advisory depletion screen.

Reservoirs now has its own tab: 204 reservoir(s), end-of-year storage back to 1974, click-to-chart histories.

Cross-gage pattern fingerprint

Not enough gages with a long enough common-coverage window yet to fingerprint shared patterns.

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.

• MICHIGAN DITCH (diversion): +0.3 cfs (1% of that reach's correction)
• CAMERON PASS DITCH (diversion): +0.3 cfs (1% of that reach's correction)
• RANGER LAKES SUPPLY DITCH (diversion): +0.3 cfs (1% of that reach's correction)
• UPPER RANGER LAKE (diversion): +0.3 cfs (1% of that reach's correction)
• LOWER RANGER LAKE (diversion): +0.3 cfs (1% of that reach's correction)
• GOULD DITCH (diversion): +0.3 cfs (1% of that reach's correction)
• DRIFTER SPRING NO. 1 (return): +0.3 cfs (1% of that reach's correction)
• DRIFTER POND (diversion): +0.3 cfs (1% of that reach's correction)
• POVERTY FLAT D NO 1 (diversion): +0.3 cfs (1% of that reach's correction)
• SHAFTO DITCH (diversion): +0.3 cfs (1% of that reach's correction)

204 reservoir(s) with 16,908 storage measurement(s), 1974–2026. Basin storage as of 2025-10-31 (the record's own end — reservoir records publish ~annually): 21,106 AF across 62 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)
▸ LAKE JOHN (4703750) ☆	7,092	2025-10-31	—	—	dossier →
▸ MACFARLANE RES (4703614) ☆	2,732	2025-10-31	—	—	dossier →
▸ LAUNE RESERVOIR (4703742) ☆	2,602	2025-10-31	—	—	dossier →
▸ NORTH MICHIGAN CK RES (4703753) ☆	1,090	2025-10-31	—	—	dossier →
▸ WALDEN RESERVOIR (4703627) ☆	902	2025-10-31	—	—	dossier →
▸ MEADOW CREEK RES (4704335) ☆	872	2025-10-31	—	—	dossier →
▸ BIG CREEK RESERVOIR (4703595) ☆	730	2025-10-31	—	—	dossier →
▸ LAKE JOHN ANNEX (4703699) ☆	692	2025-10-31	—	—	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
Columbine	9170	0.4	0.0	—	April 5 (24.6 in)
Never Summer	10300	0.0	0.0	—	May 11 (23.8 in)
Rawah	9100	0.0	0.0	—	April 7 (12.2 in)
Zirkel	9320	0.1	0.0	—	April 7 (28.5 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 (1981–2026)

A bad snow year here comes in two flavors (both called snow droughtA winter that shorts the snowpack. It happens two ways: a dry one, where the snow never comes, and a warm one, where near-normal snow falls but melts off weeks early -- and the river feels them differently.), and the river feels them differently. In 6 of the last 46 winters the snow never came — the pack peaked below 80% of its median. In 0 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 62% of median.

The snow never came: 1981, 1987, 1992, 2002, 2012, 2026.

Computed by this site from 4 SNOTEL sites’ full daily records (NRCS AWDB, back to 1981). 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 — North Platte R nr Northgate

NRCS's final issue (2026-06-01) calls it even odds that at least 42 kAF arrives over 06-01 to 09-30 — 29% of a normal season; almost certainly at least 12, probably not more than 63. Our own record at this gage shows 21 kAF so far this period (partial record: 36 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 44 replayed seasons (28% typical miss unadjusted vs 28% 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
12	26	42	50	63	143	21*

How good are these forecasts here? (1959–2025)

Grading every April issue against what the river then delivered, measured at this gage’s own record — 66 seasons: the median miss of the 50% forecast is 20%, with a low bias of 0%, 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 (1981–2025)

Across 45 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 57% of a normal season (a snow-to-runoff elasticityHow strongly one number moves with another. A snow-to-runoff elasticity of 1.5 means a 10% shortfall in April snowpack has typically become a 15% shortfall in the season's water. of 1.7).

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 6th-driest week 27 in 113 years of record at NORTH PLATTE RIVER NEAR NORTHGATE, CO (as of 2026-06-29; this week’s flow sits at the 5th percentile for the date). On this week’s US Drought Monitor, Jackson County is 21% in D3 extreme drought (2026-08-25). The law agrees: the most senior active call leaves 0% of this district’s decreed flow rights junior to the calling right this week.

Every year since 1904, week by week

Each thin row is a year at NORTH PLATTE RIVER NEAR NORTHGATE, CO; 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 Jackson county — 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 2002 — 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 (267 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	2025-08-18 → 2026-07-06	46	15th (2025-09-29)	not yet
unnamed dry spell	2024-10-14 → 2025-03-03	20	24th (2024-11-18)	0 weeks
the 2020-22 drought	2021-08-23 → 2022-05-30	40	15th (2021-10-11)	50 weeks
the 2020-22 drought	2020-10-12 → 2021-04-05	25	27th (2020-11-16)	0 weeks
the 2018 drought	2018-09-10 → 2019-03-18	27	20th (2018-11-26)	14 weeks
the 2012-13 drought	2012-08-13 → 2013-09-02	55	7th (2012-10-08)	11 weeks
the 2002 drought	2001-08-20 → 2003-08-11	103	2nd (2002-10-07)	68 weeks
unnamed dry spell	2000-10-16 → 2001-04-16	26	19th (2000-12-04)	189 weeks
unnamed dry spell	1994-08-29 → 1995-05-15	37	8th (1994-12-05)	7 weeks
unnamed dry spell	1991-11-25 → 1993-05-10	76	17th (1992-02-17)	3 weeks
unnamed dry spell	1991-01-28 → 1991-09-02	31	23rd (1991-05-13)	91 weeks
unnamed dry spell	1989-09-04 → 1990-08-27	51	18th (1989-10-23)	144 weeks
unnamed dry spell	1988-10-31 → 1989-05-08	27	24th (1989-01-30)	212 weeks
unnamed dry spell	1987-09-07 → 1988-04-18	32	21st (1987-11-23)	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.

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 1880-05-15 to 2021-12-31. Of the 20 structures with a yield estimate, the median one’s senior right was in priority 8% of a median irrigation season and 0% in a dry one. 25 abandonment screens and 390 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: 1869 across 1262 structure(s); 195 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 2003–2025, administration on this district has been tightening: 1 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 (23 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	204	38	1882-04-01
2015	215	27	1882-04-01
2016	198	56	1882-04-01
2017	185	73	1883-06-30
2018	197	95	1882-04-01
2019	177	30	1882-04-01
2020	204	109	1882-04-01
2021	250	158	1882-04-01
2022	249	87	1882-04-01
2023	365	50	1904-01-02
2024	306	75	1882-04-01
2025	186	97	1882-04-01

Why diversions stopped — call-based explanations

Sustained diversion stops matched to senior administrative calls.

• CASTLE DITCH (4700549) DWR↗☆ stopped 2025-06-20 (27+ days) — call at WILLOW CK DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BONA FIDE DITCH (4700515) DWR↗☆ stopped 2025-06-18 (14+ days) — call at WILLOW CK DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BONA FIDE DITCH 2 (4700516) DWR↗☆ stopped 2025-06-17 (15+ days) — call at WILLOW CK DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BOSTWICK DITCH (4700521) DWR↗☆ stopped 2025-05-16 (6+ days) — call at METZ & REIGAN DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BONA FIDE DITCH (4700515) DWR↗☆ stopped 2024-09-11 (231+ days) — call at SIMON DITCH curtailing 60% of its decreed rate [heuristic-partial]
• CARNEY DITCH (4700546) DWR↗☆ stopped 2024-07-31 (267+ days) — call at NICKELL DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BONA FIDE DITCH 2 (4700516) DWR↗☆ stopped 2024-07-25 (287+ days) — call at NICKELL DITCH curtailing 62% of its decreed rate [heuristic-partial]
• BOCK DITCH (4700514) DWR↗☆ stopped 2024-07-19 (6+ days) — call at WISCONSIN DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BRIGGS BOHN DITCH (4700527) DWR↗☆ stopped 2024-07-17 (280+ days) — call at WISCONSIN DITCH curtailing 100% of its decreed rate [heuristic-strong]
• CARDEN-DAGLE DITCH (4700544) DWR↗☆ stopped 2024-07-17 (440+ days) — call at WISCONSIN DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BOONE DITCH (4700519) DWR↗☆ stopped 2024-07-14 (359+ days) — call at WISCONSIN DITCH curtailing 100% of its decreed rate [heuristic-strong]
• BOSTWICK DITCH (4700521) DWR↗☆ stopped 2024-07-14 (295+ days) — call at WISCONSIN DITCH curtailing 97% of its decreed rate [heuristic-partial]

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
MICHIGAN DITCH (4704603) DWR↗☆	1902-07-10	15.4% / 2.3%	7.5% / 0.0%
WOLFER DITCH (4700961) DWR↗☆	1888-05-08	17.6% / 5.6%	7.5% / 0.0%
BUDDY'S POND (4703546) DWR↗☆	1972-12-31	7.5% / 0.0%	7.5% / 0.0%
SOUTH HACKLEY POND (4703686) DWR↗☆	1986-12-31	7.5% / 0.0%	7.5% / 0.0%
RODRIQUEZ POND (4703687) DWR↗☆	1986-12-31	7.5% / 0.0%	7.5% / 0.0%
ROSS POND (4703582) DWR↗☆	1982-12-31	7.5% / 0.0%	7.5% / 0.0%
NORTH HACKLEY POND (4703685) DWR↗☆	1986-12-31	7.5% / 0.0%	7.5% / 0.0%
SCHROEDER POND (4703697) DWR↗☆	2002-12-31	7.5% / 0.0%	7.5% / 0.0%
MUTUAL DITCH (4700786) DWR↗☆	1888-08-29	17.6% / 4.7%	7.5% / 0.0%
HOWARD DITCH (4700672) DWR↗☆	1888-05-25	17.6% / 5.6%	7.5% / 0.0%
INDEPENDENT DITCH (4700684) DWR↗☆	1888-09-01	17.6% / 4.7%	13.6% / 0.0%
OVERLAND DITCH (4700819) DWR↗☆	1888-05-31	17.6% / 5.6%	7.5% / 0.0%

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 ~1973 — idleness that begins before then may be unreported use, not nonuse (flagged † below).

• SURPRISE DITCH (4700913) DWR↗☆ (1902-09-12, 10.0 cfs decreed): last active 1975 — 49 years idle
• ANTELOPE NO 1 DITCH (4701012) DWR↗☆ (1908-05-01, 5.5 cfs decreed): last active 1976 — 48 years idle
• HUGH GRIFFITH DITCH (4700677) DWR↗☆ (1888-05-01, 5.4 cfs decreed): last active 1998 — 26 years idle
• SHEARER SPRING RES #2 (4703639) DWR↗☆ (1989-11-30, 0.0 cfs decreed): last active 2004 — 20 years idle
• DWR SPG (4702001) DWR↗☆ (1935-05-10, 0.0 cfs decreed): last active 2005 — 19 years idle
• SHEARER SPRINGS RES #1 (4703638) DWR↗☆ (1939-12-31, 0.0 cfs decreed): last active 2005 — 19 years idle
• ROBBIES POND (4703670) DWR↗☆ (1967-07-15, 0.0 cfs decreed): last active 2005 — 19 years idle
• SOUTH CASE CONTOUR (4703682) DWR↗☆ (1977-12-31, 2.0 cfs decreed): last active 2005 — 19 years idle
• DEER CREEK SPRING (4701076) DWR↗☆ (1955-12-31, 0.0 cfs decreed): last active 2006 — 18 years idle
• BLUEBILL POND (4703544) DWR↗☆ (1967-08-15, 2.0 cfs decreed): last active 2006 — 18 years idle

Compliance screens (390 advisory flags)

Screened 566 of 1262 structures with rights (648 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.

• MUTUAL DITCH (4700786) DWR↗☆: Observed p99 daily rate 167.4 cfs (max 177.1) exceeds total decreed absolute 158.0 cfs across 9366 recorded day(s).
• MIDLAND DITCH (4700774) DWR↗☆: Observed p99 daily rate 150.0 cfs (max 212.7) exceeds total decreed absolute 90.0 cfs across 20235 recorded day(s).
• INDEPENDENT DITCH (4700684) DWR↗☆: Observed p99 daily rate 120.0 cfs (max 120.0) exceeds total decreed absolute 113.0 cfs across 9367 recorded day(s).
• STAPLES DITCH 1 (4700895) DWR↗☆: Observed p99 daily rate 105.0 cfs (max 116.1) exceeds total decreed absolute 100.0 cfs across 7914 recorded day(s).
• INDEPENDENCE DITCH (4700683) DWR↗☆: Observed p99 daily rate 95.0 cfs (max 95.0) exceeds total decreed absolute 52.0 cfs across 7431 recorded day(s).
• SENECA DITCH (4700868) DWR↗☆: Observed p99 daily rate 91.4 cfs (max 93.0) exceeds total decreed absolute 73.0 cfs across 7206 recorded day(s).
• LITTLE NELLIE DITCH (4700730) DWR↗☆: Observed p99 daily rate 91.0 cfs (max 101.4) exceeds total decreed absolute 89.2 cfs across 6409 recorded day(s).
• MALLON DITCH NO 2 (4700748) DWR↗☆: Observed p99 daily rate 88.0 cfs (max 100.0) exceeds total decreed absolute 80.0 cfs across 7296 recorded day(s).
• LEWIS DITCH (4700723) DWR↗☆: Observed p99 daily rate 80.0 cfs (max 80.0) exceeds total decreed absolute 40.0 cfs across 6628 recorded day(s).
• BIG GRIZZLY DITCH (4700512) DWR↗☆: Observed p99 daily rate 78.0 cfs (max 96.7) exceeds total decreed absolute 66.7 cfs across 7574 recorded day(s).

Seniority (top structures by decreed rate)

Structure	Senior priority date	Rights	Decreed abs (cfs)	Decreed abs (AF)	Conditional?
MICHIGAN DITCH (4704603) DWR↗☆	1902-07-10	5	275.0	0	—
WOLFER DITCH (4700961) DWR↗☆	1888-05-08	5	218.5	0	—
BUDDY'S POND (4703546) DWR↗☆	1972-12-31	2	206.0	29	—
ROSS POND (4703582) DWR↗☆	1982-12-31	2	204.5	14	—
NORTH HACKLEY POND (4703685) DWR↗☆	1986-12-31	2	204.5	5	—
SOUTH HACKLEY POND (4703686) DWR↗☆	1986-12-31	2	204.5	4	—
RODRIQUEZ POND (4703687) DWR↗☆	1986-12-31	2	204.5	40	—
SCHROEDER POND (4703697) DWR↗☆	2002-12-31	2	185.0	3	—
MUTUAL DITCH (4700786) DWR↗☆	1888-08-29	4	158.0	0	—
HOWARD DITCH (4700672) DWR↗☆	1888-05-25	5	136.0	0	yes
INDEPENDENT DITCH (4700684) DWR↗☆	1888-09-01	3	113.0	0	—
OVERLAND DITCH (4700819) DWR↗☆	1888-05-31	9	108.3	0	—
SQUIBOB DITCH (4700893) DWR↗☆	1888-04-30	7	106.5	0	—
DARBY DITCH (4700584) DWR↗☆	1901-05-31	3	103.9	0	—
HUBBARD DITCH 2 (4700674) DWR↗☆	1889-04-02	7	103.0	0	—

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

Water-court filings this month (division-wide)

5 applications in the 2026-08 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 2026-10-31 (61 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 5 filings, with excerpts

Case	What it asks	County	Excerpt
2026CW10	—	ROUTT	2026CW10 Routt County Application for Absolute Water Rights (Storage). Applicant: Wilton Earle 785 Valley View Drive Craig, CO 81625; 970-824-6258; rettae74@gmail.com.; Logan Earle 785 Valley View Drive Craig, CO 81625; 970-620-5288; earlelogan679@gmail.com St…
2026CW11	—	RIO BLANCO	2026CW11 Rio Blanco County Application for Simple Change in Surface Point of Diversion. Applicants: John and Diana Hartman, 2804 E Main Street, Rangely, CO 81648, 970-618-0088, dgrantelk@gmail.com Structure: Calvat Ditch. Original Decree: CA099. Case: 11/26/19…
2026CW3009	reasonable diligence	—	2026CW3009 ROUTT AND RIO BLANCO COUNTIES, Prima Ranches LLC, c/o David Harbaugh, 3575 E Cherry Creek North Drive, Denver, CO 80209, (303) 478-8997. Please address all correspondence to: Geoffrey M. Williamson, Katherine Carter, Berg Hill Greenleaf Ruscitti LLP…
2026CW3010	change of water right, plan for augmentation, new underground right	ROUTT	2026CW3010 ROUTT COUNTY Water Division: 6. DISTRICT COURT, WATER DIVISION SIX, STATE OF COLORADO, Routt County Combined Court, 1955 Shield Drive, Unit 200, Steamboat Springs, CO 80487. CONCERNING THE APPLICATION FOR WATER RIGHTS OF SIDNEY PEAK RANCH OWNERS’ AS…
2026CW3011	change of water right	RIO BLANCO	2026CW3011 RIO BLANCO COUNTY – WHITE RIVER. Mahogany Ranch, LLC, c/o Kevin L. Patrick, and John M. Sittler, Patrick, Miller & Noto, P.C., 229 Midland Ave., Basalt, CO 81621. (970) 920-1030. APPLICATION FOR CHANGE OF WATER RIGHT. Summary of Application: Applica…

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.

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