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Ewing Ditch at Tennessee Pass

Transbasin diversion gage · EWIDITCO · USGS 09062000 · Division 2 · Water District 11 · Eagle County

Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)

Source DWR administrative record · verify at DWR station ↗ Source Independent agency measurement · verify at USGS ↗ Source Our computation, no independent reference · computed here from the screened record

Two different numbers, deliberately: Flowing now is raw 15-minute telemetry, provisional and unreviewed. Latest cached reading is the end of the verified daily record. They are never merged, and the verified series is the one the trend is computed on.

What this gage meters

This is not a natural stream record. The Ewing Ditch moves water from Piney Creek, Eagle River headwaters at Tennessee Pass (Div 5) into Tennessee Creek, Arkansas basin (Div 2), operated by Pueblo Board of Water Works — so this record is a ledger of those deliveries. Trends here reflect operational and demand decisions, not the basin's hydrology, and the basin trends page marks it accordingly (⇆). All of Colorado's curated transbasin diversions are collected at /transbasin.

The record

Period of record
1947-10-01 → 2026-09-27
Daily values
26,392
Flowing now
0.0 cfs 2026-10-15 11:45, 1.0 h ago
Latest cached reading
0.0 cfs (2026-09-27)
Trend
no trend, -0.02 cfs/decade (-1.5% of median)

Readings come from the weekly-refreshed cache, never fetched live — the date beside the value says exactly how fresh it is. The live gage is one click up.

Annual flow & trend

Chart: annual mean flow at Ewing Ditch at Tennessee Pass, water years 1947 to 2026. The measured record is no trend at -0.02 cubic feet per second per decade. The underlying yearly values are available as a CSV download linked at the top of this page.

Loading chart…

This gage measures the Ewing Ditch, water carried across the Continental Divide. It is taken from Piney Creek, Eagle River headwaters at Tennessee Pass (Div 5) and delivered to Tennessee Creek, Arkansas basin (Div 2) — so what this gage reads leaves one river basin for good and arrives in another.

The two ends: Ewing Ditch (source, on South Fork Eagle River); Ewing Ditch (receiving, on South Fork Eagle River)

Decrees:

The ditch’s mapped channel is drawn on the map below where the USGS has surveyed it. Every crossing →

Where it sits

Location as DWR records it (4.0).

Provenance

DWR station abbreviation EWIDITCO; recorded station name “EWING DITCH AT TENNESSEE PASS, CO.”; operated by DWR. Daily flows from the DWR HydroBase snapshot plus CDSS REST updates, refreshed on the weekly cycle. Trend statistics are Mann-Kendall (Hamed-Rao corrected) with Sen's slope in native cfs, the same numbers as the basin Trends tab.