Gregory State Game Area Dam #3 dam
Gregory State Game Area Dam #3
Located in Pinckney, Michigan, Gregory State Game Area Dam #3, also known as Bently Lake Road Flooding, is a state-owned earth dam completed in 1965. This dam serves as a vital structure for regulating water flow in the tributary to Honey Creek, with a primary purpose designated as "Other." Standing at a structural height of 7.5 feet and a hydraulic height of 7.2 feet, the dam boasts a normal storage capacity of 90 acre-feet and a maximum storage of 160 acre-feet.
With a low hazard potential and fair condition assessment, Gregory State Game Area Dam #3 is inspected every five years by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE). The dam features an uncontrolled spillway with a width of 182 feet, capable of discharging up to 300 cubic feet per second in times of high water levels. The dam's risk assessment is rated as moderate, emphasizing the importance of ongoing risk management measures to ensure the safety and functionality of the structure.
Enthusiasts of water resources and climate in Livingston County, Michigan, can appreciate Gregory State Game Area Dam #3 for its role in water regulation and flood control within the local ecosystem. As a key component of the state's infrastructure, this earth dam stands as a testament to the ongoing efforts to manage water resources effectively while balancing environmental concerns and public safety. With a rich history dating back to the mid-20th century, this dam continues to play a crucial role in the region's water management practices, under the watchful eye of regulatory agencies and emergency preparedness protocols.
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 Gregory State Game Area Dam #3 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Huron River Near Hamburg | 230 cfs | → |
| Mill Creek Near Dexter | 52 cfs | → |
| Huron River Near New Hudson | 105 cfs | → |
| Huron River At Ann Arbor | 445 cfs | → |
| Huron River At Milford | 73 cfs | → |
| Red Cedar River Near Williamston | 84 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gregory State Game Area Dam #3.
Boat launches
- Spears Road Putnam Township
- Potawatomi Trail Putnam Township
- East Schafer Road Hamburg Township
- Potawatomi Trail
- Half Moon Lake, 236 Acres, Washtenaw County
Campgrounds
- Pinckney-Crooked Lake Rustic
- Pines North
- Blind Lake Campground
- Pinckney State Rec Area
- Pines South
- Munhacke
Track Gregory State Game Area Dam #3 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 Gregory State Game Area Dam #3
Where does the data for Gregory State Game Area Dam #3 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 Gregory State Game Area Dam #3.