Eagle Nest Lake

Eagle Nest Lake held 20,850 acre-feet on Nov 4, 2026, 25.7% of its full pool.

A storage reservoir: it holds water for later release. On Cimarron River headwaters. Canadian basin.

20,850acre-feet held, Nov 4, 2026
25.7%of the full pool (81,073 acre-feet)
Down 84acre-feet over 30 days
29,770acre-feet a year ago (36.7%)

These reservoirs hold water for later use. Percent full is the water held divided by what the reservoir can hold at its full pool, using the capacity that applied at the time.

Last 365 days

Percent of the full pool. There are too few years with a trustworthy capacity record to show what is normal for the date.

010203040%2026MarMayJulSepNov

Show the data as a table

Year by year

The highest, average and lowest percent of the full pool in each calendar year. The latest year is partial. Years whose capacity is less certain are marked in the table below.

  • Highest
  • Average
  • Lowest
020406080100%1990200020102020

Show the data as a table

Readings are what the operating agencies report; we have not audited the latest values. Reclamation labels its data "provisional and subject to revision unless otherwise noted."

Year-by-year table, with how well capacity is known
Highest, average and lowest storage by year
YearDaysMost (acre-feet)AverageLeastHighest %Average %Lowest %Capacity figure
202630830,03026,12320,58537.0%32.2%25.4%The operator's current table fits the record
202536532,73030,89329,62040.4%38.1%36.5%The operator's current table fits the record
202436638,21033,91029,02047.1%41.8%35.8%The operator's current table fits the record
202336543,22036,89431,58053.3%45.5%39.0%The operator's current table fits the record
202236538,43034,93531,29047.4%43.1%38.6%The operator's current table fits the record
202136539,15036,89635,01048.3%45.5%43.2%The operator's current table fits the record
202036648,01041,92735,07059.2%51.7%43.3%The operator's current table fits the record
201936551,24043,66333,30063.2%53.9%41.1%The operator's current table fits the record
201836543,06038,37833,12053.1%47.3%40.9%The operator's current table fits the record
201736543,71039,12829,83053.9%48.3%36.8%The operator's current table fits the record
201636635,51031,89629,17043.8%39.3%36.0%The operator's current table fits the record
201536531,32025,96317,21038.6%32.0%21.2%The operator's current table fits the record
201436522,04020,03816,86026.5%24.1%20.3%Capacity recovered from the record, weakly supportednot used for "this date in other years"
201336530,10025,05220,69036.2%30.1%24.9%Before elevation records began; capacity extrapolatednot used for "this date in other years"
201236641,41035,16428,79049.8%42.2%34.6%Before elevation records began; capacity extrapolatednot used for "this date in other years"
201136552,69045,23037,98063.3%54.3%45.6%Before elevation records began; capacity extrapolatednot used for "this date in other years"
201036561,15052,68143,69073.5%63.3%52.5%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200936552,32047,29443,15062.9%56.8%51.8%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200836650,96045,46537,40061.2%54.6%44.9%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200736542,32037,94432,21050.8%45.6%38.7%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200636540,73036,01531,52048.9%43.3%37.9%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200535045,97037,28825,61055.2%44.8%30.8%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200436030,40026,67524,82036.5%32.0%29.8%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200336537,53031,76525,30045.1%38.2%30.4%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200236548,30041,19734,54058.0%49.5%41.5%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200136558,90052,95646,10070.8%63.6%55.4%Before elevation records began; capacity extrapolatednot used for "this date in other years"
200036667,60060,91253,60081.2%73.2%64.4%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199936567,30063,05658,00080.9%75.8%69.7%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199836569,40062,58256,50083.4%75.2%67.9%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199736573,10064,30755,60087.8%77.3%66.8%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199636672,28063,14054,80086.8%75.9%65.8%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199536579,60073,83868,99095.6%88.7%82.9%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199436581,36072,92269,70097.8%87.6%83.7%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199336577,41070,26764,16093.0%84.4%77.1%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199236675,88070,57162,83091.2%84.8%75.5%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199136574,99070,73562,79090.1%85.0%75.4%Before elevation records began; capacity extrapolatednot used for "this date in other years"
199036571,80065,43462,12086.3%78.6%74.6%Before elevation records began; capacity extrapolatednot used for "this date in other years"
198936573,59067,30862,68088.4%80.9%75.3%Before elevation records began; capacity extrapolatednot used for "this date in other years"
198836673,25069,39865,36088.0%83.4%78.5%Before elevation records began; capacity extrapolatednot used for "this date in other years"
198719077,84072,70470,46093.5%87.4%84.7%Before elevation records began; capacity extrapolatednot used for "this date in other years"
1986576,12075,15274,59091.5%90.3%89.6%Before elevation records began; capacity extrapolatednot used for "this date in other years"

About this reservoir

A high-elevation reservoir at the head of the Cimarron River, built in 1918 and owned by the New Mexico Department of Game and Fish. It stores water for downstream irrigation and is a major recreation and fishing lake.

How to use these numbers

  • Northeastern headwater conditions. Storage tracks snowmelt from the Moreno Valley and the surrounding peaks.

Read before quoting a number

  • Elevation is reported only from 2013. Storage before then cannot be tied to a capacity table vintage and is measured against the current table.
  • Since 2013 the lake has not risen above about 8,181 ft, roughly 50,600 acre-feet or 62% of full pool, though it routinely held 70,000 to 81,000 acre-feet before 2000. Whether that is drought alone or an operating restriction should be confirmed with the owner before drawing conclusions from the recent percentages.

The dam

Facts about the dam, from the National Inventory of Dams
DamEagle Nest Dam
OwnerNew Mexico Department of Game and Fish (State)
TypeArch
Purposes, per the dam registryIrrigation, Recreation
Completed1918
Height142 feet
Hazard classHigh
Registry capacity98,400 acre-feet at most, 81,000 normal. Owner-reported and not corrected for sediment.

National Inventory of Dams, U.S. Army Corps of Engineers.

How capacity is known

Capacity comes from the operator's elevation-to-storage table (NMISC, effective 1900-01-01), checked against the storage the operator reports. Since the table took effect, it reproduces reported storage from reported elevation to within 3 acre-feet in the median (0.01% of storage), across 3,220 days. Where an older table was in force, we recover its capacity from the record and say how well supported it is.

Pool elevations and capacity
PoolElevation (ft)Capacity now (acre-feet)Where it comes from
Full poolused as 100%8,194.681,073the elevation at which the current table holds 81,000 acre-feet: the storage record (1986-2026) tops out at 81,360, matching the dam registry normal storage of 81,000
Capacity over time (2 tables in force)
The capacity of the pool used as 100%, by period
PeriodCapacity (acre-feet)How well supported
2013-10-01 to 2014-12-312013-2014 table83,232Capacity recovered from the record, weakly supported
2015-01-01 to 2026-11-03current table81,073The operator's current table fits the record

Rivers

Data and sources

Record from 1986 (41 years with readings), through Nov 4, 2026. Where several agencies report the same reservoir, we take each day's value from the first in this list that has one:

  • U.S. Geological Survey NWIS: 14,362 days

Year by year (CSV) ยท Last 365 days (CSV)

Credit: U.S. Geological Survey NWIS; National Inventory of Dams (U.S. Army Corps of Engineers). Capacity analysis by New Mexico Water. Data accessed November 4, 2026.