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NAILL WELL 1-4432R

Structure dossier · WDID 0107783 · 2 · SOUTH PLATTE RIVER · DWR record

Where this page's figures come from

Generated 2026-08-27 19:24 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — every figure regenerates from this named code version and data image.

Where it sits in line

Priority 1962-11-19 — 2870th most senior of the 7705 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: MOORE WELL 5-13742 (1962-11-13). Immediately behind: MCLEOD WELL 1 (1962-11-23).

Decreed rights (1)

Admin noDWR's numeric encoding of a water right's seniority. Smaller is more senior; the integer part counts days from 1849-12-31 to the date that ranks the right. AppropriatedWhen water was first put to beneficial use. It sets seniority unless a prior adjudication date is later. AdjudicatedWhen the water court confirmed the right. A use decreed in 1975 was not a decreed use in 1955, however old the appropriation is. AbsoluteA right actually put to use, as opposed to conditional -- a placeholder for a use not yet made. ConditionalA right reserving a place in line for a use not yet made; it must be diligently pursued or it lapses. UnitsUsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on.Case
41230.01962-11-191971-12-31 3.550.0 CIRR

Recorded use (last 15 years on record)

In a median year this structure has a recorded diversion of 181 AF. Its most recent year on record, 2024, came in at 181 AF — 100% of that, and 8th lowest of the 15 years with a recorded volume.

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 recordDays recordedPeak (cfs)
2008 49 3rd lowest of 15 · 27% of median 57 1.3
2009 144 6th lowest of 15 · 80% of median 59 2.2
2010 168 7th lowest of 15 · 93% of median 53 2.3
2011 104 5th lowest of 15 · 58% of median 43 2.2
2012 183 9th lowest of 15 · 101% of median 62 2.8
2013 25 1st lowest of 15 · 14% of median 18 1.1
2014 49 3rd lowest of 15 · 27% of median 20 1.8
2017 218 10th lowest of 15 · 120% of median 153 1.7
2018 224 11th lowest of 15 · 124% of median 154 2.5
2019 232 12th lowest of 15 · 128% of median 154 2.6
2020 368 14th lowest of 15 · 203% of median 124 3.5
2021 257 13th lowest of 15 · 142% of median 93 3.0
2022 46 2nd lowest of 15 · 25% of median 61 0.5
2023 519 15th lowest of 15 · 287% of median 154 4.0
2024 181 8th lowest of 15 · 100% of median 128 1.5

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.