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MARSHALL LAKE
Structure dossier · WDID 0604212 · RESERVOIR · SOUTH BOULDER CREEK · DWR record
Where this page's figures come from
Generated 2026-08-27 22:35 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (96d5528) — every figure regenerates from this named code version and data image.
Where it sits
Location as DWR records it. 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 administrative call record for this basin.
Where it sits in line
Priority 1860-04-01 — 34th most senior of the 1867 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: LOUISVILLE RES NO 1 (1860-04-01). Immediately behind: 0605427 (1860-04-01).
On SOUTH BOULDER CREEK at river mile 12.9, it is 19th of 58 down the reach. Immediately upstream: MARSHALLVILLE DITCH. Immediately downstream: SCHEARER DITCH.
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 (21)
| 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. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 3744.0 | 1860-04-01 | 1882-06-02 | 0.0 | 0.0 | A | IRRMUNOTH | |
| 4853.0 | 1863-04-15 | 1882-06-02 | 0.0 | 0.0 | A | IRRMUN | |
| 5235.0 | 1864-05-01 | 1882-06-02 | 0.0 | 0.0 | A | IRRMUNOTH | |
| 8141.0 | 1872-04-15 | 1882-06-02 | 0.0 | 0.0 | A | IRRMUNRECFISDOMOTHWLD | |
| 8553.0 | 1873-06-01 | 1882-06-02 | 0.0 | 0.0 | A | IRRMUNRECFISDOMOTHWLD | |
| 8553.0 | 1873-06-01 | 1882-06-02 | 0.0 | 0.0 | C | IRRMUNRECFISDOMOTHWLD | |
| 11567.0 | 1881-09-01 | 1907-03-13 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 12724.0 | 1884-11-01 | 1907-03-13 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 12941.0 | 1885-06-06 | 1900-12-19 | 2.06 | 0.0 | C | STOIRRMUNCOMINDRECFISFIRDOMSTK | |
| 12941.0 | 1885-06-06 | 1900-12-19 | 2048.0 | 0.0 | A | STOIRRMUNCOMINDRECFISFIRDOMSTK | |
| 14001.0 | 1888-05-01 | 1900-12-19 | 0.0 | 0.0 | A | STOIRRMUNCOMINDRECFISFIRDOMSTK | |
| 14439.0 | 1889-07-13 | 1900-12-19 | 0.0 | 0.0 | A | MUNAUGOTH | |
| 15386.0 | 1892-02-15 | 1907-03-13 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 17441.0 | 1897-10-01 | 1907-03-13 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 20188.16893 | 1896-04-01 | 1907-03-13 | 0.0 | 0.0 | A | MUNAUGOTH | |
| 20890.19055 | 1902-03-04 | 1926-06-21 | 9251.0 | 0.0 | A | STOIRRMUNCOMINDRECFISFIRDOMSTK | |
| 20890.20624 | 1906-06-20 | 1907-11-03 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 22561.0 | 1911-10-09 | 1935-01-09 | 600.0 | 0.0 | A | IRRMUNCOMINDRECDOMAUG | |
| 27930.22561 | 1911-10-09 | 1953-09-28 | 0.0 | 0.0 | A | IRR | |
| 27930.23981 | 1915-08-29 | 1953-09-28 | 0.0 | 0.0 | A | IRRMUNRECFISDOMWLD | |
| 29219.0 | 1929-12-31 | 1953-09-28 | 9053.14 | 0.0 | A | STOIRRMUNCOMINDRECFISFIRDOMSTK |
Legal record & documents
91 decreed actions on record across
21 court cases:
CA12111, 89CW0163, 85CW0119, 20CW3216, 07CW0310, 02CW0292, CA6672, 84CW0165, 92CW0079, 82CW0375 and 11 more below.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
CA12111 | 4 | 1953-09-28 | S |
89CW0163 | 10 | 1953-09-28 | S |
85CW0119 | 11 | 1953-09-28 | O, S |
20CW3216 | 10 | 1953-09-28 | S |
07CW0310 | 8 | 1953-09-28 | S |
02CW0292 | 8 | 1953-09-28 | S |
CA6672 | 4 | 1935-01-09 | S |
84CW0165 | 8 | 1935-01-09 | S |
92CW0079 | 5 | 1926-06-21 | S |
82CW0375 | 1 | 1907-03-13 | S |
W8287 | 1 | 1900-12-19 | S |
CA3944 | 1 | 1900-12-19 | S |
85CW0330 | 1 | 1900-12-19 | S |
82CW0376 | 1 | 1900-12-19 | S |
W9193 | 1 | 1882-06-02 | O |
W8500 | 2 | 1882-06-02 | O |
W8348 | 1 | 1882-06-02 | O |
W8347 | 1 | 1882-06-02 | O |
W8346 | 3 | 1882-06-02 | O |
83CW0319 | 3 | 1882-06-02 | O |
80CW0468 | 7 | 1882-06-02 | O |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 15 years on record)
In a median year this structure has a recorded diversion of 4,752 AF. Its most recent year on record, 2021, came in at 4,159 AF — 88% of that, and 5th lowest of the 14 years with a recorded volume.
This structure records both diversions and reservoir releases — they are separate water movements and are accounted separately below.
| Year | Diverted (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 record | Released (AF) | Days recorded | Peak (cfs) |
|---|---|---|---|---|---|
| 2007 | — | no recorded volume | 133 | 0 | — |
| 2008 | 849 | 1st lowest of 14 · 18% of median | 139 | 60 | 14.4 |
| 2009 | 8,140 | 13th lowest of 14 · 171% of median | — | 235 | 150.0 |
| 2010 | 3,848 | 4th lowest of 14 · 81% of median | — | 165 | 52.9 |
| 2011 | 8,456 | 14th lowest of 14 · 178% of median | — | 247 | 132.1 |
| 2012 | 4,159 | 5th lowest of 14 · 88% of median | 9 | 252 | 36.0 |
| 2013 | 7,550 | 12th lowest of 14 · 159% of median | 7 | 252 | 150.0 |
| 2014 | 3,227 | 3rd lowest of 14 · 68% of median | 12 | 139 | 24.6 |
| 2015 | 1,371 | 2nd lowest of 14 · 29% of median | 14 | 95 | 37.4 |
| 2016 | 5,054 | 9th lowest of 14 · 106% of median | 391 | 230 | 58.5 |
| 2017 | 5,791 | 11th lowest of 14 · 122% of median | — | 206 | 112.3 |
| 2018 | 4,457 | 7th lowest of 14 · 94% of median | — | 198 | 75.4 |
| 2019 | 5,541 | 10th lowest of 14 · 117% of median | — | 197 | 77.3 |
| 2020 | 5,047 | 8th lowest of 14 · 106% of median | — | 183 | 66.8 |
| 2021 | 4,159 | 5th lowest of 14 · 88% of median | — | 130 | 170.3 |
Trends for this structure
Recorded use shows no clear trend over its last 14 recorded years — which is itself worth knowing.
Its reference gage, DRY CREEK NO 2 DITCH: no clear flow trend.
How good is our record of it?
Grade B (8/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 21 right(s), seniority decoded |
| diversion record | stale | 4309 measured days, but newest is 1920 day(s) before the data's end (target 450) |
| record continuity | patchy | 44% of the irrigation seasons in 1975-2021 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.