Supply Basin dam
Supply Basin
Supply Basin in Colorado is a state-regulated earth dam completed in 1911 for recreational purposes. Located in Garfield County near Glenwood Springs, this dam on Deep Creek stands at 13 feet high with a hydraulic height of 7 feet. With a storage capacity of 267 acre-feet, Supply Basin covers a surface area of 22 acres and has a maximum discharge of 1600 cubic feet per second.
Despite its low hazard potential, the dam's condition was assessed as fair during the last inspection in July 2019. With a moderate risk assessment score, Supply Basin has an inspection frequency of 6 times per year. The dam features an uncontrolled spillway with a width of 15 feet, and its primary purpose of recreation underscores its importance as a water resource and climate asset in the region. Enthusiasts of water resources and climate issues will find Supply Basin an intriguing structure to study and monitor for its impact on the local environment.
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 Supply Basin -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Colorado River Below Glenwood Springs | 2,290 cfs | → |
| Roaring Fork River At Glenwood Springs | 928 cfs | → |
| Colorado River Near Dotsero | 1,050 cfs | → |
| Eagle River Below Gypsum | 433 cfs | → |
| White River Below North Elk Creek Near Buford | 559 cfs | → |
| Roaring Fork River Near Emma | 426 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Supply Basin.
Boat launches
- Lyon's Gulch Boat Ramp
- Grizzly Creek Garfield County
- I 70 Garfield County
- South Canyon Boat Ramp
- Cottonwood Island Boat Ramp
- Dotsero Landing Boat Ramp
Campgrounds
Fishing spots
- Deep Lake Fishing/Picnic Area Fishing Site
- Meadow Creek Lake
- Meadow Lake Picnic Area
- Trappers Lake
- Lake Of The Woods
- Harvey Gap Reservoir
Track Supply Basin 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 Supply Basin
Where does the data for Supply Basin 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 Low 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 Supply Basin.