Mantua dam
Mantua
Mantua is a local government-owned structure in Box Elder, Utah, with a primary purpose of irrigation. Completed in 1961, this earth dam on Big Creek has a hydraulic height of 24 feet and a structural height of 29 feet. The reservoir has a storage capacity of 10,450 acre-feet, with a normal storage level of 7,560 acre-feet and a drainage area of 9 square miles.
Managed by the Utah Division of Water Rights, Mantua is regulated, permitted, inspected, and enforced by the state. The dam has a high hazard potential but is currently in satisfactory condition, according to the last inspection in May 2020. Although there are no associated structures or federal agency involvement, Mantua plays a crucial role in providing water for irrigation purposes in the region.
Located in the city of Mantua, this dam is situated in a picturesque setting, surrounded by natural beauty. With its important role in water resource management and climate resilience, Mantua serves as a vital infrastructure for supporting agricultural activities in the area. Enthusiasts interested in water resources and climate change will find Mantua to be an intriguing case study of dam infrastructure in the state of Utah.
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 Mantua -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Bear River At Paradise | 61 cfs | → |
| Bear River Near Corinne | 239 cfs | → |
| Blacksmith Fork Ab U.P.&L. Co | 71 cfs | → |
| Weber River Near Plain City | 56 cfs | → |
| Ogden River Bl Pineview Res Near Huntsville | 180 cfs | → |
| Logan River Above State Dam | 405 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mantua.
Boat launches
- Promontory Road Corinne
- Highway 30 Cache County
- Road Tour Box Elder County
- Highway 102 Box Elder County
- West 3000 North 4507, Cache County
- North 3000 West Cache County
Campgrounds
- Little Valley Country Store & Campground
- Box Elder Campground
- Middle Fork Dispersed Camping
- Blacksmith Fork Cabin
- Friendship Campground
- Spring Campground
Paddle runs
Track Mantua 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 Mantua
Where does the data for Mantua 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 Mantua.