Lake Mosier Upground Reservoir dam
Lake Mosier Upground Reservoir
Lake Mosier Upground Reservoir, also known as Fostoria Reservoir No. 4, is a captivating water supply infrastructure located in Hancock County, Ohio. Constructed in 1941 by THE CHESTER ENGINEERS, this local government-owned reservoir serves as a critical source of water for the city of Fostoria. With a storage capacity of 1207 acre-feet and a surface area of 90.6 acres, Lake Mosier plays a vital role in meeting the water needs of the region.
Situated along the East Branch Portage River, this earth dam structure stands at a height of 25 feet and stretches 8125 feet in length. The reservoir has a normal storage capacity of 740.4 acre-feet, providing a reliable water source for the surrounding community. Despite being classified as having a high hazard potential, the dam's condition is assessed as fair, with the last inspection conducted in May 2016.
Managed by the Department of Natural Resources, Lake Mosier Upground Reservoir undergoes regular inspections and enforcement to ensure its safety and functionality. With its strategic location and significant contribution to water supply, this reservoir serves as a crucial asset in maintaining water resource sustainability in the region, making it a significant point of interest for water resource and climate 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 Lake Mosier Upground Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Blanchard River Above Findlay Oh | 232 cfs | → |
| Sandusky River At Tiffin Oh | 577 cfs | → |
| Lye Creek Above Findlay Oh | 90 cfs | → |
| Rock Creek At Tiffin Oh | 15 cfs | → |
| Blanchard River Near Findlay Oh | 381 cfs | → |
| Tymochtee Creek At Crawford Oh | 31 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Mosier Upground Reservoir.
Boat launches
- Reservoir Boat Ramps
- Jackson Landing
- Upper Sandusky Reservoir
- Mary Jane Thurston State Park
- Schroders Farm
- Hood Park
Campgrounds
Track Lake Mosier Upground Reservoir 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 Lake Mosier Upground Reservoir
Where does the data for Lake Mosier Upground Reservoir 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 Lake Mosier Upground Reservoir.