Lake Grant dam
Lake Grant
Lake Grant, located in Gunnison, Colorado, is a vital water supply structure managed by the public utility in SKYLAND METRO. Completed in 1995, this earth dam stands at 17 feet high with a hydraulic height of 15 feet and a structural height of 21 feet. With a storage capacity of 379 acre-feet and a surface area of 22 acres, Lake Grant serves as a critical resource for water storage and supply in the region. Despite its high hazard potential, the dam is currently in a satisfactory condition and undergoes regular inspections to ensure its safety and functionality.
Managed by the Department of Water Resources (DWR) in Colorado, Lake Grant is regulated and permitted by the state authorities to ensure its compliance with safety standards. The dam, situated along the Slate River-TR, has a maximum discharge capacity of 903 cubic feet per second and is equipped with slide and uncontrolled outlet gates. Additionally, the dam lacks a spillway, which poses a potential risk during high water events. With its risk assessment categorized as high and a hazard potential of 2, Lake Grant is closely monitored and managed to mitigate any potential risks and ensure the safety of the surrounding communities.
With its primary purpose being water supply, Lake Grant plays a crucial role in meeting the water needs of the region. As a significant infrastructure for water resource management, the dam provides essential storage capacity and support for various water-related activities. The dam's satisfactory condition, regular inspections, and compliance with state regulations highlight its importance in ensuring a reliable and sustainable water supply for the residents of Gunnison, Colorado.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
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 Grant -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East River Bl Cement Creek Nr Crested Butte | 542 cfs | → |
| East River At Almont Co. | 425 cfs | → |
| Taylor River At Almont | 264 cfs | → |
| Taylor River Below Taylor Park Reservoir | 148 cfs | → |
| Ohio Creek Above Mouth Nr Gunnison | 10 cfs | → |
| Taylor River At Taylor Park | 173 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Grant.
Boat launches
- Boat Ramp Road Gunnison County
- South Bank Day Use Area/ Boat Access- Gunnison Rd
- Slot #2 Day Use Area/Boat Access- Gunnison Rd
- Boat Dock Road Gunnison County
- Bear Road Gunnison County
- Us 50 Gunnison County
Campgrounds
- Oh-Be-Joyful Campground
- Cement Creek
- Cement Creek Campground - Gunnison Rd
- Gothic Campground
- Gothic
- Gothic Campground - Gunnison Rd
Fishing spots
- Lake Irwin
- Meridian Lake
- Emerald Lake (Crested Butte)
- Spring Creek Reservoir
- Beaver Lake Swa (Marble)
- Taylor Park Reservoir
Track Lake Grant in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Lake Grant
Where does the data for Lake Grant come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High 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 dam, 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 Grant.