Graymont Sludge Lagoons dam
Graymont Sludge Lagoons
Graymont Sludge Lagoons in Genoa, Ohio, are privately owned tailings dams that were completed in 1981 to store mining waste. Managed by the Department of Natural Resources, these lagoons have a significant hazard potential and are in poor condition, according to the last inspection in October 2019. With a total storage capacity of 354.3 acre-feet and covering a surface area of 27.2 acres, these earth dams on Toussaint Creek play a crucial role in environmental protection and water resource management in Ottawa County.
Despite their important function, Graymont Sludge Lagoons face challenges in terms of their structural integrity and maintenance. The inspection frequency is set at every 5 years, indicating the need for regular monitoring and potential improvements to ensure their safety and efficiency. The presence of significant hazard potential underscores the importance of proactive risk management measures, emergency action plans, and updated contact information to address any unforeseen incidents or emergencies that may arise.
As water resource and climate enthusiasts, it is vital to recognize the role of Graymont Sludge Lagoons in managing tailings and protecting the local environment. By understanding their purpose, condition, and potential risks, stakeholders can work together to enhance the resilience and sustainability of these structures, safeguarding water resources and ecosystems in Ottawa, Ohio.
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 Graymont Sludge Lagoons -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Portage River At Woodville Oh | 155 cfs | → |
| Portage R. Near Elmore Oh | 203 cfs | → |
| Ottawa River At University Of Toledo Toledo Oh | 36 cfs | → |
| Sandusky River Near Fremont Oh | 450 cfs | → |
| Wolf Creek At Holland Oh | 20 cfs | → |
| Maumee River At Waterville Oh | 2,440 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Graymont Sludge Lagoons.
Boat launches
- Corduroy Road 11073, Lucas County
- Toussaint Wildlife Area
- Walbridge Park Marina
- Cullen Park
- Maple Street Boat Ramp
- Corey Street Ramp
Campgrounds
- Crystal Rock Campground
- Group Area 1 Camping Area G Group
- Group Area 2 Camping Area G
- Camping Area E
- State Park Camp Grounds
- Sterling State Park
Track Graymont Sludge Lagoons 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 Graymont Sludge Lagoons
Where does the data for Graymont Sludge Lagoons 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 Significant 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 Graymont Sludge Lagoons.