Dejarnatt dam
Dejarnatt
Dejarnatt is a privately owned dam located in Box Elder, Utah, specifically in the city of Howell. Built in 1967 by the USDA NRCS, this earth dam stands at a structural height of 43 feet and has a hydraulic height of 37 feet. Its primary purpose is flood risk reduction, serving the Blue Creek and covering a drainage area of 73 square miles. With a storage capacity of 1350 acre-feet, Dejarnatt plays a significant role in managing water resources in the region.
Managed by the Utah Division of Water Rights, Dejarnatt is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. The dam has a hazard potential rated as significant, highlighting the importance of regular inspections and maintenance. Despite not having a condition assessment, Dejarnatt is a vital infrastructure for flood control and water management in the area. Its location, design, and purpose make it a key asset for climate resilience and water resource conservation efforts in Utah.
As a part of the flood risk reduction system, Dejarnatt contributes to the overall water management strategy in Box Elder County. With its close proximity to the Blue Creek and a storage capacity of 1350 acre-feet, the dam plays a crucial role in mitigating flood risks and ensuring water availability in the region. Upheld by the Natural Resources Conservation Service and regulated by state authorities, Dejarnatt stands as a testament to the collaborative efforts in safeguarding water resources and adapting to changing climate 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 Dejarnatt -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bear River Near Corinne | 411 cfs | → |
| Bear River At Idaho-Utah State Line | 483 cfs | → |
| Logan River Above State Dam | 410 cfs | → |
| Little Bear River At Paradise | 83 cfs | → |
| Logan | 68 cfs | → |
| Blacksmith Fork Ab U.P.&L. Co | 74 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dejarnatt.
Boat launches
- Highway 102 Box Elder County
- West 6200 North 6484, Cache County
- West 3000 North 4507, Cache County
- Highway 30 Cache County
- Road Tour Box Elder County
- Box Elder County
Campgrounds
Track Dejarnatt 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 Dejarnatt
Where does the data for Dejarnatt 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 Dejarnatt.