Swan dam
Swan
Swan is a privately owned earth dam located in Laramie, Wyoming, near the city of Cheyenne. Built in 1907 for irrigation purposes, Swan stands at a height of 25 feet and has a storage capacity of 356 acre-feet. The dam spans 1450 feet in length and is situated on Clear Creek, with a drainage area of 11.6 square miles.
Despite its age, Swan has been maintained and regulated by the Wyoming State Engineer's Office, with regular inspections and enforcement measures in place. However, the dam is classified as having a significant hazard potential and is currently in poor condition, highlighting the need for ongoing risk management and potential rehabilitation efforts to ensure the safety and integrity of the structure.
With a spillway width of 150 feet and a maximum discharge capacity of 72 cubic feet per second, Swan is a vital water resource for the region. Its location within Congressional District 00, Wyoming, under the oversight of the Omaha District of the US Army Corps of Engineers, underscores its importance in water management and climate resilience efforts in the area.
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 Swan -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Crow Creek At 19th Street | 3 cfs | → |
| N Frk Cache La Poudre R Blw Halligan Res Nr V Dal | 38 cfs | → |
| North Fork Cache La Poudre R. At Livermore | 4 cfs | → |
| Cache La Poudre R A Mo Of Cn | 914 cfs | → |
| Cache La Poudre River At Fort Collins | 299 cfs | → |
| Cache La Poudre R Ab Boxelder C | 299 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Swan.
Campgrounds
- F.E. Warren Afb Crow Creek Military
- Curt Gowdy State Park
- Vedauwoo
- Vedauwoo Campground
- Pole Creek Dispersed Campground
- Yellow Pine
Fishing spots
- Lake Absarraca
- Sloans Lake
- Lower North Crow Reservoir
- Granite Springs Reservoir
- Upper North Crow Reservoir
- Smith Lake (Lar. Cty.) (Boxelder #3)
Track Swan 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 Swan
Where does the data for Swan 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 Significant 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 Swan.