Perkins dam
Perkins
Perkins is a privately-owned irrigation dam located in Big Horn, Wyoming, along the Boulden Gulch stream. Built in 1964 by designer John W Donnell, this Earth dam stands at a height of 25 feet and has a hydraulic height of 20 feet, serving the primary purpose of irrigation. With a storage capacity of 178 acre-feet, Perkins covers a surface area of 13 acres and has a spillway width of 20 feet.
Despite its low hazard potential, Perkins has been assessed to be in poor condition, with a risk level rated as moderate. The dam's inspection frequency is set at 5 years, with the last assessment conducted in September 2021. The dam features a slide (sluice gate) outlet gate and an uncontrolled spillway type. As a crucial water resource infrastructure in the area, Perkins plays a vital role in supporting agricultural activities and water management efforts in the region.
While Perkins has not undergone significant modifications over the years, its regulatory compliance and enforcement mechanisms remain active, with state jurisdiction, permitting, inspection, and enforcement all in place. As climate change continues to impact water resources and infrastructure, monitoring and maintaining dams like Perkins will be crucial for ensuring water security and resilience in the face of changing environmental conditions.
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 Perkins -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bighorn River At Basin | 1,010 cfs | → |
| Shell Creek Near Shell | 74 cfs | → |
| Bighorn River At Kane | 1,310 cfs | → |
| Shell Creek Above Shell Creek Reservoir | 12 cfs | → |
| Bighorn R At Worland Wyo | 4,350 cfs | → |
| Shoshone River Near Lovell | 391 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Perkins.
Boat launches
Campgrounds
- Cabin Creek Campground
- Cabin Creek Meadows
- Shell Creek
- Shell Creek Campground
- Ranger Creek - Paintrock
- Ranger Creek Recreation Area
Track Perkins 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 Perkins
Where does the data for Perkins 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 Perkins.