EAST MESA DITCH ☆ My Water

The record and the river

Where this structure is measured

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.

In short

EAST MESA DITCH holds 3 decreed rights on CRYSTAL RIVER. No call currently reaches it that we can lawfully attribute, so none of its rights are being curtailed by one. 19 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. In a median year over its last 15 recorded years it diverts 8,880 acre-feet. That use is rising by about 167.5 acre-feet a year over 15 years (p=0.04776124267510373). It was a party to 1 court cases that also touched 5 other structures.

Assembled from the figures on this page — every number above is checked against them before it is shown (9 checked). The detail, with its method, is in the cards below.

Current administration

● In priority — no active call senior to this structure's rights affects its district (28 active call(s) checked).

19 further calls state no district and sit outside this one, so they are counted here rather than assumed either way.

Which of its rights are out of priority?

No active call verifiably reaches this structure (28 active call(s) checked), so none of its 3 rights is administratively curtailed today. (19 call(s) state no district and sit outside this one — not judged, not assumed.) In the 5 past years most like this one (2010, 2019, 2017, 2011, 2012), 1 of the rights shown below were out at least one week in at least one analog year.

Where it sits in line

Priority 1894-08-10 — 276th most senior of the 4793 structures with decreed rights in this water districtDWR's administrative subdivision of a river basin; the unit calls are usually stated in..

Under prior appropriationColorado's rule for sharing water: first in time, first in right. Age decides, not proximity or need., everything ahead of it in this line is satisfied in full before it receives any water. Immediately ahead: LOWLINE DITCH (1890-09-25)☆. Immediately behind: VANDEVENTER SPRING DITCH (1886-05-01)☆.

On CRYSTAL RIVER at river mile 45.4, it is 157th of 246 down the reach. Immediately upstream: JOHNSON DITCH☆. Immediately downstream: W DIV PR AVLNC PWR PL☆.

Position on the modelled network, not a claim about whose water this is — a stream carries water from many rights at once, and diverted water returns to it.

Decreed rights (3)

Amounts marked cfs are flow rates; AF are stored volumes (storage rights are decreed in acre-feet). An absolute amount of 0.0 beside an alt-point amount is not a dead right: the water is decreed at another structure, and that row records permission to divert it here instead (an alternate point or exchange). A case listing several numbers reflects the original decree plus later change cases.

How much of this decree was in priority, by day

A right is in priority on a day when it is senior to every call administering this structure. Of its 41.8 cfs decreed rate, the average day over the last 6 year(s) had 35.973 cfs in priority (86% of the decree). No call in effect is a free river — that was 40.0% of days.

On 1074 days some rights were in priority and others were not — seniority splits a decree rather than switching it off. Calls are set and released at a time of day, not at midnight, so a day is counted by the hour: a call setting at 4pm costs that day a third of its rate, not all of it. A call began or ended mid-day on 22 of these days.

This is paper water. It is the decreed rate that was in priority — not water that was physically in the stream, and not water this structure diverted. A ditch can be in priority for 50 cfs on a day the creek carries five. What that distinction means →

Legal record & documents

9 decreed actions on record across 4 court cases: 98CW0283, CA4033, 96CW0210, CA0990.

Imaged documents at DWR. DWR keeps the scanned documents for this structure — decrees, rulings, plats, correspondence — in its Laserfiche archive. Open the list directly: imaged documents for 3800651 ↗ (indexed by structure, not by case — the cases listed above appear within the list).

Other DWR records for this structure: DWR’s page for this structure ↗ — net amounts, water rights, transactions & adjudication history, and diversion records, all on that one page. On this site: the district’s full legal picture →

Filings that would move water above this headgate

2 water-court applications in the monthly resumes name a structure on CRYSTAL RIVER upstream of this headgate. A new right, exchange or change of use up there changes what arrives down here — the resume is the public notice, and the opposition window is how anyone affected answers it.

Judged on this structure’s own named stream only — a filing on a tributary that joins upstream is not judged here. Filings that name structures only in prose, without a WDID, are invisible to this card. Reading aid, not legal advice; the deadline is computed from C.R.S. 37-92-302(3), and the court’s own notice controls.

Structures it shares court cases with

This structure was a party to 1 court case that also touched 5 other structures — changes of water right, augmentation plans, exchanges. Being parties to the same case does not by itself mean water moved between them; which way it ran, and how much, is in the decree.

Also a party to 1 omnibus adjudication (CA4033, 169 structures). Those settled many rights at once and are listed separately: they say these structures were adjudicated together, not that they deal with each other.

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 8,880 AF. Its most recent year on record, 2024, came in at 8,680 AF — 98% of that, and 6th lowest of the 15 years with a recorded volume.

Trends for this structure

Recorded use is rising over its last 15 recorded years (+168 AF/yr, Mann-Kendall p=0.048).

Its reference gage, Crystal River above Avalanche Creek, near Redstone: no clear flow trend.

Every gage and reach in this district →

How good is our record of it?

Grade B (8/10 points) — the components below are the finding; the letter alone is not.