Posey Lake Level Control Structure dam
Posey Lake Level Control Structure
The Posey Lake Level Control Structure, also known as Posey Lake Dam, is a private-owned gravity dam located in Hudson, Michigan. Completed in 1955, the dam serves primarily for recreational purposes, maintaining a normal storage capacity of 190 acre-feet and a maximum storage of 715 acre-feet. With a structural height of 7.3 feet and a hydraulic height of 5.8 feet, the dam plays a crucial role in managing the water levels of Posey Lake Drain.
The dam's spillway, with a width of 11 feet, is uncontrolled, and the structure has a low hazard potential with a satisfactory condition assessment as of the last inspection in May 2020. Despite being privately owned and not under state jurisdiction or regulation, the Posey Lake Level Control Structure is a vital component of the local water resource management system. Enthusiasts of water resources and climate will find this structure fascinating for its historical significance and role in supporting recreational activities in the area.
As a part of the Detroit District, the Posey Lake Level Control Structure stands as a testament to the engineering and design efforts that have shaped Michigan's water infrastructure. With a moderate risk assessment and regular inspections, the dam continues to provide valuable support to the community while enhancing the recreational experience for residents and visitors alike. Its strategic location and functionality make it a noteworthy landmark for those interested in water resource management and climate resilience efforts in the region.
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 Posey Lake Level Control Structure -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bean Creek At Powers Oh | 163 cfs | → |
| River Raisin Near Adrian | 236 cfs | → |
| River Raisin Near Manchester | 23 cfs | → |
| West Branch St. Joseph River Nr Nettle Lake | 59 cfs | → |
| South Branch Hog Creek Near Allen | 36 cfs | → |
| Grand River At Jackson | 87 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Posey Lake Level Control Structure.
Boat launches
- Skinner Highway 2590, Rome Township
- Deep Lake Road Cambridge Township
- Us 12 9697, Cambridge Township
- Wamplers Lake Road 1280, Cambridge Township
- Wamplers Lake Road Cambridge Township
- Round Lake Road 1208, Liberty Township
Campgrounds
- Lake Hudson State Rec Area
- Lake Hudson Semi-Modern Campground
- W. J. Hayes State Park
- Harrison Lake State Park
- Wildwood Acres Campground
- Delasalle
Track Posey Lake Level Control Structure 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 Posey Lake Level Control Structure
Where does the data for Posey Lake Level Control Structure 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 Posey Lake Level Control Structure.