Lake Sumner reservoir
Lake Sumner
Lake Sumner is a reservoir located in the eastern part of New Mexico, United States. The lake was formed in the 1930s by the construction of a dam on the Pecos River. It is primarily fed by the Pecos River and its tributaries, as well as by snowmelt from the nearby mountains. The lake serves as a source of irrigation water for agricultural purposes and is also used for recreational activities such as fishing, boating, and camping. The surrounding area is home to several species of wildlife, including deer, elk, and pronghorn antelope. In recent years, the lake has faced challenges from drought and overuse, leading to concerns about its long-term sustainability. Efforts are underway to address these issues through improved water management and conservation measures.
Daily levels at Lake Sumner
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Storage
acre-ft · code 17
Inflow
cfs · code 29
Pool Elevation
ft · code 49
Total Release
cfs · code 42
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Lake Sumner -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pecos River Below Sumner Dam | 81 cfs | → |
| Pecos River Near Puerto De Luna | 65 cfs | → |
| Fort Sumner Main Canal Near Fort Sumner | 79 cfs | → |
| Pecos River Below Taiban Creek Near Fort Sumner | 30 cfs | → |
| Pecos River Below Santa Rosa Dam | 0 cfs | → |
| Pecos River Above Santa Rosa Lake | 9 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Sumner.
Track Lake Sumner in the Snoflo app
Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").
About Lake Sumner
Where does the data for Lake Sumner come from?
Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.
What does the Hazard hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Lake Sumner.