Hydrohistorian
Log in

← My Water  ·  Print / save as PDF  · 

 ·  every download of this record carries its certificate id

MOFFAT TUNNEL

Structure dossier · WDID 0604655 · OTHER · SOUTH BOULDER CREEK · DWR record · probably DENVER WATER BOARD’s (matched on DWR’s contact or an EPA intake name; verify below)

Source DWR administrative record · verify at DWR structure ↗ Source DWR administrative record · verify at DWR diversion records ↗ Source Our computation, scored against a reference · scored against DWR's call analysis, see /methods

Where this page's figures come from

Generated 2026-09-15 11:13 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (9b001bc) — every figure regenerates from this named code version and data image.

Where this structure is measured

GageFlowing nowRecordHow we know
MOFFAT WATER TUNNEL AT EAST PORTAL, CO. MOFTUNCO 10.9 cfs 1936–2026, 35,454 days DWR telemetry mapping

A green link is DWR's own: either its telemetry inventory maps this WDID to that station, or the station is named for this WDID (0700553 → 0700553A). An amber one is ours — the station sits within 250 m and shares a distinctive word with this structure's name, which is a strong hint rather than a DWR statement that this gage meters this structure. Wrong? Tell us.

Flowing now

10.9 cfs as of 2026-09-15 08:30 (2.7 h ago)

Provisional 15-minute telemetry from MOFTUNCO ↗ (MOFFAT WATER TUNNEL AT EAST PORTAL, CO.). Raw, not the approved record — it is never merged into the diversion history below. DWR publishes the official diversion record after the water year closes and is approved, which is why that record ends months back while this reads minutes ago.

In short

In a median year over its last 15 recorded years it diverts 42,258 acre-feet.

Assembled from the figures on this page — every number above is checked against them before it is shown (2 checked). The detail, with its method, is in the cards below.

Download this structure

Everything on this page as data you can work with — and a README that makes it citable: the HydroBase snapshot it was built from, the build commit, what every column means, the method behind each derived figure, and that method's stated limits.

⇩ Full record (.zip) Print / save as PDF

Or one table at a time: rights.csv · annual_use.csv · curtailment_now.csv · court_cases.csv · co_parties.csv · call_climatology.csv

What is in the bundle
  • rights.csv — every decreed right, most senior first, with admin numbers, dates, amounts, uses and case numbers.
  • annual_use.csv — recorded diversion by year, with releases accounted separately.
  • curtailment_now.csv — each right's current priority status and how often it was out across analog years.
  • court_cases.csv — the cases attached to its rights.
  • co_parties.csv — the other structures that were parties to those cases. Not available anywhere else.
  • call_climatology.csv — how often each right has been out of priority by week of season, with confidence intervals and the seasons the record could actually judge.
  • README.txt — provenance, methods, limits, disclaimer, and links back to DWR's own records for verification.

Where it sits

Location as DWR records it (other). Faint dots are the neighbouring water; click any to open it.

Which of its rights are out of priority?

Not computable for this structure: no decreed right on file, so there is no priority to test.

Recorded use (last 15 years on record)

Years far under the decreed amount? That gap has a name — paper water vs. wet water, explained on this structure.

In a median year this structure has a recorded diversion of 42,258 AF. Its most recent year on record, 2024, came in at 30,605 AF — 72% of that, and 6th lowest of the 15 years with a recorded volume.

This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.

YearDiverted (AFA volume: one acre covered a foot deep, about 326,000 gallons -- roughly a suburban household's outdoor use for a year.)Compared with its own recordReleased (AF)Days recordedPeak (cfs)
2010 1,995 1st lowest of 15 · 5% of median 1,995 61 27.0
2011 53,652 14th lowest of 15 · 127% of median 53,652 365 863.0
2012 41,943 7th lowest of 15 · 99% of median 41,943 366 273.0
2013 56,183 15th lowest of 15 · 133% of median 56,183 365 715.0
2014 23,312 2nd lowest of 15 · 55% of median 23,312 365 133.0
2015 24,677 3rd lowest of 15 · 58% of median 24,677 361 144.0
2016 24,948 4th lowest of 15 · 59% of median 24,948 364 194.0
2017 42,258 8th lowest of 15 · 100% of median 42,258 355 328.0
2018 49,272 11th lowest of 15 · 117% of median 49,272 365 695.0
2019 49,593 12th lowest of 15 · 117% of median 49,593 365 625.0
2020 53,384 13th lowest of 15 · 126% of median 53,384 366 658.0
2021 43,372 9th lowest of 15 · 103% of median 43,372 296 607.1
2022 48,804 10th lowest of 15 · 116% of median 48,804 365 299.0
2023 28,247 5th lowest of 15 · 67% of median 28,247 365 244.0
2024 30,605 6th lowest of 15 · 72% of median 30,605 305 296.0

How good is our record of it?

Grade B (7/10 points) — the components below are the finding; the letter alone is not.

The rubric, component by component
CheckStateDetail
identity complete name, type, and water source all on file
decreed rights absent no water rights cached for this WDID
diversion record present 5029 measured days; currency unknown (no data-coverage date to compare against)
record continuity continuous 100% of the irrigation seasons in 2010-2024 carry measured days
published-record stability stable no upstream revisions recorded against this structure

Advisory reading aid on public data — not an administrative or legal conclusion, not a title opinion, and not a substitute for DWR administration or an engineer's analysis. Methodology review status is disclosed at hydrohistorian's basin pages.

Hydrohistorian is free, with no ads — one server and a lot of public records. If it earns its keep, you can help keep it running.