Mill Hollow dam
Mill Hollow
Mill Hollow is a state-regulated dam located in the picturesque city of Woodland, Utah. Built in 1962 with a primary purpose of recreation, this earth dam stands at a hydraulic height of 45.5 feet and a structural height of 51.5 feet, providing a storage capacity of 440.8 acre-feet. The dam, situated on the Mill Hollow river, offers a serene setting for water resource and climate enthusiasts to explore and enjoy.
With a high hazard potential but a satisfactory condition assessment as of 2008, Mill Hollow Dam is regularly inspected by the Utah Division of Water Rights to ensure its safety and functionality. The dam's emergency action plan status and risk assessment measures are currently unknown, but its location in the Wasatch County presents a beautiful opportunity for outdoor recreation and appreciation of water resources in a stunning natural environment. As the dam continues to be monitored and maintained, visitors can marvel at the engineering marvel that contributes to the local landscape.
Mill Hollow Dam serves as a vital piece of infrastructure for both recreation and water management in the region, offering a glimpse into the intersection of human intervention and natural beauty. With its rich history and ongoing regulatory oversight, this dam is a must-visit destination for those interested in the delicate balance between water resources and climate resilience. Whether for leisurely activities or educational purposes, Mill Hollow invites exploration and contemplation of the importance of sustainable water practices in a changing climate.
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 Mill Hollow -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Provo River Near Woodland | 770 cfs | → |
| Provo River Near Hailstone | 739 cfs | → |
| Provo River At River Road Bridge | 141 cfs | → |
| Weber River Near Oakley | 689 cfs | → |
| Provo River Near Charleston | 168 cfs | → |
| Snake Creek Near Charleston | 23 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mill Hollow.
Boat launches
- Forest Service Road Wasatch County
- Rock Cliff Boat Ramp
- State Route 319 Wasatch County
- Deer Creek State Park- Charleston Day Use Area
- State Route 314 Wasatch County
Campgrounds
- Mill Hollow Campground
- Mill Hollow
- Ymca Camp Roger
- Lower Provo River
- Lower Provo River Campground
- Soapstone Campground
Fishing spots
Track Mill Hollow 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 Mill Hollow
Where does the data for Mill Hollow 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 Mill Hollow.