Long Lake Control Structure dam
Long Lake Control Structure
The Long Lake Control Structure, located in Brighton, Michigan, is a gravity dam built in 1951 primarily for recreational purposes. With a height of 7.7 feet and a hydraulic height of 5.8 feet, this structure serves as a key feature along the South Ore Creek, offering a storage capacity of 400 acre-feet and a normal storage level of 230 acre-feet. Despite its low hazard potential, the dam's condition assessment in 2018 revealed poor maintenance, indicating a need for potential improvements to ensure its long-term functionality and safety.
Although the Long Lake Control Structure does not fall under state jurisdiction or regulation, its significance lies in providing recreational opportunities and maintaining water levels for the surrounding area. The dam's spillway type is uncontrolled, with a width of 38 feet, allowing for a maximum discharge of 185 cubic feet per second. While the risk assessment categorizes the structure as moderate, there is room for enhancement in terms of condition assessment, emergency action planning, and risk management measures to address any potential safety concerns and ensure the sustainable use of this water resource for future generations of climate and water enthusiasts.
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 Long Lake Control Structure -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Huron River At Milford | 73 cfs | → |
| Huron River Near New Hudson | 105 cfs | → |
| Huron River Near Hamburg | 230 cfs | → |
| Upper River Rouge At Farmington | 24 cfs | → |
| Middle River Rouge At Plymouth | 40 cfs | → |
| Huron River At Ann Arbor | 445 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Long Lake Control Structure.
Boat launches
- Hilton Road 8809, Brighton Township
- West Dawson Road 1790, Oakland County
- Pettibone Lake Boat Launch Oakland County
- Pettibone Lake Road Highland
- Conrad Road Genoa Township
- Alderman Lake Boat Landing Oakland County
Campgrounds
Fishing spots
Track Long Lake 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 Long Lake Control Structure
Where does the data for Long Lake 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 Long Lake Control Structure.