Tony Grove Lake Dam dam
Tony Grove Lake Dam
Tony Grove Lake Dam, located in Cache County, Utah, is a federally owned structure primarily used for recreational purposes. Built in 1939, this earth dam stands at a height of 24 feet and has a storage capacity of 465 acre-feet. The dam, situated on the Tony Grove River, serves as a popular destination for water resource and climate enthusiasts, offering opportunities for fishing, boating, and hiking in the surrounding area.
Despite its age, Tony Grove Lake Dam has faced challenges in recent years, with a poor condition assessment and a high hazard potential. The dam underwent modifications in 2005 to improve its hydraulic capabilities, but ongoing inspections and maintenance are necessary to ensure its continued safety and functionality. The Utah Division of Water Rights regulates the dam, with the Forest Service overseeing operations, inspections, and regulatory compliance.
While the dam poses a moderate risk, efforts are being made to manage potential hazards and mitigate any safety concerns. With its picturesque setting and recreational opportunities, Tony Grove Lake Dam remains a beloved feature of the Cache County landscape, attracting visitors who appreciate the intersection of water resources, climate conservation, and outdoor recreation.
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 Tony Grove Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Logan | 77 cfs | → |
| Logan River Above State Dam | 367 cfs | → |
| Bear River At Idaho-Utah State Line | 498 cfs | → |
| Blacksmith Fork Ab U.P.&L. Co | 73 cfs | → |
| Little Bear River At Paradise | 88 cfs | → |
| Big Creek Near Randolph | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Tony Grove Lake Dam.
Boat launches
- North 3000 West Cache County
- West 3000 North 4507, Cache County
- West 6200 North 6484, Cache County
- Highway 30 Cache County
- North Cisco Road Rich County
- Highway 102 Box Elder County
Campgrounds
- Tony Grove Lake Campground
- Tony Grove Lake
- Lewis M. Turner Campground
- Red Banks Campground
- Smithfield
- Smithfield Campground
Paddle runs
Track Tony Grove Lake Dam 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 Tony Grove Lake Dam
Where does the data for Tony Grove Lake Dam 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 Tony Grove Lake Dam.