GREENHORN VALLEY DITCH ☆ My Water

In short

GREENHORN VALLEY DITCH holds 14 decreed rights on GREENHORN CREEK. A call at HAYDEN SUPPLY DITCH on GREENHORN CREEK (1866-04-30) currently reaches it: junior rights called out. 13 further calls state no district and sit outside this one, so they are counted here rather than assumed either way. That is today's position; the weeks ahead cannot be projected for it: no gage record for this year at this date, so there is nothing to find analogs for. In a median year over its last 15 recorded years it diverts 9 acre-feet. That use is rising by about 14.4 acre-feet a year over 15 years (p=0.003382115302850597).

Assembled from the figures on this page — every number above is checked against them before it is shown (8 checked). The detail, with its method, is in the cards below.

Current administration

● Junior rights called out — call at HAYDEN SUPPLY DITCH (GREENHORN CREEK, priority 1866-04-30).

Which of its rights are out of priority?

The outlook for the weeks ahead is not computable for this structure: no gage record for this year at this date, so there is nothing to find analogs for. Today’s position is a separate question, and it is answered in Current administration above — that screen reads the district’s active calls and needs no reference gage.

Where it sits in line

Priority 1859-05-01 — 3rd most senior of the 704 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: CUERNA VERDE ASSOCIATION (1859-05-01)☆. Immediately behind: HAYDEN SUPPLY DITCH (1859-05-01)☆.

On GREENHORN CREEK at river mile 3.3, it is 145th of 560 down the reach. Immediately upstream: 1513388☆. Immediately downstream: 1514163☆.

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 (14)

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 4.15 cfs decreed rate, the average day over the last 6 year(s) had 2.198 cfs in priority (53% of the decree). No call in effect is a free river — that was 0.0% of days.

On 551 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.

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

15 decreed actions on record across 2 court cases: CA2756, 80CW0044.

10 imaged documents on DWR’s shelf for this structure — 5 water-court documents across 2 cases, including 2 decrees. Every row opens the scanned PDF at DWR. Listing as of 2026-10-10.

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 1500536 ↗ (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 →

Structures it shares court cases with

Also a party to 2 omnibus adjudications (CA2756, 124 structures; 80CW0044, 20 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 9 AF. Its most recent year on record, 2025, came in at 216 AF — 2400% of that, and 12th lowest of the 15 years with a recorded volume.

Call-derived yield: senior right divertible 100.0% of a median season / 100.0% dry-year.

Trends for this structure

Recorded use is rising over its last 15 recorded years (+14 AF/yr, Mann-Kendall p=0.003).

Its reference gage, Shurtz Ditch above Rye: no clear flow trend.

Every gage and reach in this district →

How good is our record of it?

Grade A (9/10 points) — the components below are the finding; the letter alone is not.