Herman-Sadlier dam
Herman-Sadlier
Herman-Sadlier is a private Earth dam located in Uintah, Utah, along the Ashley Creek. Built in 1963 by the USDA NRCS, this dam serves the primary purpose of irrigation and is regulated by the Utah Division of Water Rights. With a hydraulic height of 25 feet and a structural height of 28 feet, Herman-Sadlier has a storage capacity of 76 acre-feet, with a normal storage of 60 acre-feet. The dam spans 780 feet in length and covers a drainage area of 1.9 square miles.
Despite its age, Herman-Sadlier has a low hazard potential and has not been rated for its condition. The dam was last inspected in July 2016 and is scheduled for inspection every five years. Emergency preparedness measures such as an Emergency Action Plan (EAP) and inundation maps are not currently in place for this structure. With its location in a critical water resource area and its importance for irrigation in the region, continued monitoring and maintenance of Herman-Sadlier are essential for the safety and sustainability of water resources in the surrounding area.
In the hands of private owners, Herman-Sadlier stands as a testament to the collaboration between federal and state agencies in managing water resources for agricultural purposes. With its historical significance and ongoing role in supporting local irrigation needs, this dam serves as a vital piece of infrastructure that requires continued attention and investment to ensure its functionality and safety for the community it serves.
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 Herman-Sadlier -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Green River Near Jensen | 4,080 cfs | → |
| Big Brush Creek Abv Red Fleet Res | 15 cfs | → |
| Ashley Creek Near Vernal | 83 cfs | → |
| Ashley Cr Abv Sp Nr Vernal Ut | 4 cfs | → |
| Duchesne River Near Randlett | 53 cfs | → |
| Uinta River At Randlett | 10 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Herman-Sadlier.
Boat launches
- Desert Voices Trail Uintah County
- Uintah County
- Pelican Lake Boat Ramp
- Seep Ridge Road Uintah County
- White River Enron Boat Ramp
Campgrounds
- Paradise Park Campground
- Koa Vernal
- Steinaker State Park
- Split Mountain Campground
- Split Mountain - Dinosaur National Monument
- Split Mountain Gorge Campground
Fishing spots
- Little Brush Creek
- Red Fleet Reservoir
- Box Reservoir
- Brough Reservoir
- Pelican Lake
- Bullock Draw Reservoir
Track Herman-Sadlier 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 Herman-Sadlier
Where does the data for Herman-Sadlier 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 Herman-Sadlier.