Holloway Dam dam
Holloway Dam
Holloway Dam, also known as Richfield Storage Dam, is a gravity-type dam located on the Flint River in Genesee, Michigan. Completed in 1954, the dam serves primarily for recreational purposes and stands at a height of 38 feet with a hydraulic height of 27 feet. It has a maximum storage capacity of 29,900 acre-feet and a normal storage capacity of 15,350 acre-feet, covering a surface area of 1400 acres.
With a controlled spillway width of 240 feet and a maximum discharge rate of 36,200 cubic feet per second, Holloway Dam is equipped to handle high hazard potential. Despite its high risk assessment, the dam has been deemed to be in satisfactory condition, as per the last inspection conducted in August 2018. The dam is regulated and inspected by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE) to ensure its safety and compliance with state regulations.
Holloway Dam plays a crucial role in water resource management in the region and is a key feature for water and climate enthusiasts to explore and study. Its location on the Flint River provides valuable insights into the impact of dams on local ecosystems and water supply, making it a significant asset for research and conservation efforts in the area.
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 Holloway Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Flint River Near Otisville | 289 cfs | → |
| Kearsley Creek Near Davison | 60 cfs | → |
| South Branch Flint River Near Columbiaville | 190 cfs | → |
| Farmers Creek Near Lapeer | 30 cfs | → |
| Flint River Near Flint | 416 cfs | → |
| Cass River At Frankenmuth | 359 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Holloway Dam.
Boat launches
- Holloway Reservoir, 2000 Acres, Lapeer County
- Mott Lake -E, 650 Acres, Genesee County
- Blue Gill Boat Launch
- Buell Lake, Genesee County
- Lake Nepessing, 414 Acres, Lapeer County
- Long Lake, 204 Acres, Lapeer County
Campgrounds
- Wolverine
- Otter Lake Park
- Arthur Latham Park
- Metamora - Hadley Rec Area
- Old Family Camp Site - Not Rentable
- Paul Bunyon
Fishing spots
Track Holloway 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 Holloway Dam
Where does the data for Holloway 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 Holloway Dam.