North Crow Diversion dam
North Crow Diversion
The North Crow Diversion is a crucial water supply structure located in Laramie, Wyoming, designed to divert water from the North Fork of Crow Creek for various purposes, primarily water supply. Completed in 1910, this arch dam stands at a height of 46 feet and has a maximum storage capacity of 4,000 acre-feet. It serves the local government and is regulated by the State of Wyoming, with inspections conducted regularly to ensure its fair condition.
The dam's significant hazard potential and moderate risk assessment highlight the importance of proper risk management measures and emergency preparedness. Despite its age, the North Crow Diversion continues to play a vital role in the water resource infrastructure of the region, providing water for agricultural, municipal, and industrial needs. With its uncontrolled spillway and stone core foundation, this historic structure remains a key component of water management in the area, demonstrating the importance of maintaining and monitoring aging dams to ensure public safety and water availability in a changing climate.
As climate change continues to impact water resources, the North Crow Diversion serves as a reminder of the critical role that infrastructure plays in managing water supply and mitigating the effects of a changing climate. With its location in the North Fork of Crow Creek and close proximity to Cheyenne, this dam underscores the importance of sustainable water management practices and the need for ongoing monitoring and maintenance to safeguard water resources for future generations.
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 North Crow Diversion -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Crow Creek At 19th Street | 3 cfs | → |
| Laramie River At Laramie | 19 cfs | → |
| N Frk Cache La Poudre R Blw Halligan Res Nr V Dal | 1 cfs | → |
| North Fork Cache La Poudre R. At Livermore | 4 cfs | → |
| Sand Creek At Colorado-Wyoming State Line | 3 cfs | → |
| Laramie River Near Bosler | 1,950 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near North Crow Diversion.
Campgrounds
- Curt Gowdy State Park
- Vedauwoo Campground
- Vedauwoo
- Pole Creek Dispersed Campground
- Yellow Pine
- Yellow Pine Campground
Fishing spots
- Lower North Crow Reservoir
- Granite Springs Reservoir
- Upper North Crow Reservoir
- Lake Absarraca
- Sloans Lake
- Leazenby Lake
Paddle runs
- Co Dow Anlger Access Trail To Nf Boundary On East Section Line, Sec 24, T11n, R72w
- Intermittent Stream To Junction With Co Division Of Wildlife Angler Access Trail In Sw 1/4 Sec 22, T11n, R72w
- Upper North Fork
- Road West Of Creedmore Lakes To Junction Of Intermittent Stream In Sw 1/4, Sec 29, T11n, R72w
- Lower North Fork
- Pearl Creek To Junction Of Road West Of Creedmore Lakes In Sw 1/4 Sec 5, T10n, R73e
Track North Crow Diversion 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 North Crow Diversion
Where does the data for North Crow Diversion 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 North Crow Diversion.