Hyrum dam
Hyrum
Hyrum Dam, located in Cache County, Utah, is a federal irrigation structure managed by the Bureau of Reclamation and funded by the same agency. Completed in 1934, this earth dam on the Little Bear River stands at a height of 116 feet and serves multiple purposes including irrigation, recreation, and water supply. With a storage capacity of 18,685 acre-feet and a maximum discharge rate of 6,000 cubic feet per second, Hyrum Dam plays a crucial role in managing water resources in the region.
Despite its age, Hyrum Dam is regularly inspected by the Bureau of Reclamation to ensure its safety and functionality. The dam has a high hazard potential and a very high risk assessment rating, necessitating proper risk management measures. The emergency action plan for the dam was last revised in September 2020, emphasizing the importance of preparedness and adherence to safety guidelines. With its controlled spillway and strategic location in the Little Bear River watershed, Hyrum Dam remains a vital infrastructure for water resource management in Utah.
Hyrum Dam's historical significance, combined with its modern-day importance in irrigation and water supply, makes it a focal point for water resource and climate enthusiasts. The dam's role in managing water flow, providing recreational opportunities, and ensuring a stable water supply for the surrounding area highlights the critical need for sustainable water management practices. As the Bureau of Reclamation continues to monitor and maintain Hyrum Dam, it stands as a testament to the ongoing efforts to balance water resource utilization with environmental conservation in the region.
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 Hyrum -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Bear River At Paradise | 83 cfs | → |
| Blacksmith Fork Ab U.P.&L. Co | 74 cfs | → |
| Logan River Above State Dam | 410 cfs | → |
| Logan | 68 cfs | → |
| Bear River Near Corinne | 411 cfs | → |
| Ogden River Bl Pineview Res Near Huntsville | 177 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hyrum.
Boat launches
- Highway 30 Cache County
- West 3000 North 4507, Cache County
- North 3000 West Cache County
- Promontory Road Corinne
- Highway 102 Box Elder County
- West 6200 North 6484, Cache County
Campgrounds
- Little Valley Country Store & Campground
- Box Elder Campground
- Blacksmith Fork Cabin
- Friendship Campground
- Bridger Campground
- Logan, Free Camping
Track Hyrum 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 Hyrum
Where does the data for Hyrum 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 Hyrum.