Mosaic Csa F2a dam
Mosaic Csa F2a
Mosaic Csa F2a, located in Fort Lonesome, Hillsborough, Florida, is a privately-owned earth dam with a primary purpose of storing tailings. Constructed in 1986, this dam stands at a height of 40 feet and has a hydraulic height of 35 feet, with a structural height of 42 feet. It has a storage capacity of 33,100 acre-feet and covers a surface area of 650 acres, serving as a critical structure for managing water resources in the area.
The dam is regulated by the Mine Safety and Health Administration, with state oversight from the Florida Department of Environmental Protection. Despite being classified as having a significant hazard potential, the condition assessment is listed as "Not Rated." The last inspection was conducted in 2005, highlighting the need for ongoing monitoring and maintenance to ensure the safety and integrity of the structure. With a very high risk rating and a controlled spillway system in place, the Mosaic Csa F2a dam plays a crucial role in water management and climate resilience efforts in the region.
As an integral part of the Alderman Creek watershed, Mosaic Csa F2a is vital for flood control, water storage, and environmental protection in the area. The dam's strategic location and design features make it a key asset for mitigating the impacts of climate change and ensuring sustainable water resource management in Hillsborough County. With proper oversight and maintenance, this structure will continue to play a crucial role in safeguarding the community against potential hazards and supporting the region's water supply needs for years to come.
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 Mosaic Csa F2a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Prong Alafia River Near Ft Lonesome Fl | 7 cfs | → |
| Little Manatee River Near Ft. Lonesome Fl | · | → |
| South Fork Little Manatee River Near Parrish Fl | 1 cfs | → |
| South Prong Alafia River Near Lithia Fl | 12 cfs | → |
| South Fork Little Manatee River Near Wimauma Fl | 4 cfs | → |
| Horse Creek Near Myakka Head Fl | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mosaic Csa F2a.
Boat launches
- Alderman's Ford Park Trail Hillsborough County
- Alligator Alley, Plant City
- Manatee County
- Center Avenue 852, Brandon
- Griffin Road 676, Wauchula
- Wildcat Creek
Campgrounds
- Alafia River State Park
- Alderman's Ford Park Campsite 1
- Alderman's Ford Park Campsite 4
- Alderman's Ford Park Campsite 2
- Alderman's Ford Park Campsite 3
- Lithia Springs
Fishing spots
Paddle runs
- County Road 780 Bridge To State Road 72 Bridge
- Begins Downstream Of The State Road 72 Bridge To The Southern Boundary Of Myakka River State Park
- The Southern Boundary Of The Myakka River State Park To Ends Approximately At River Mile 23 Where Riverfront Residential Development Begins
- Approximately At River Mile 23 Where Riverfront Residential Development Begins To The Vicinity Of Snook Haven Fish Camp At Approximately River Mile 18
- Approximately River Mile 18 To A Point Just Upriver Of The Us 41 Highway Crossing
- A Point Just Upriver Of The Us 41 Highway Crossing To The Sarasota/Charlotte County Line
Track Mosaic Csa F2a 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 Mosaic Csa F2a
Where does the data for Mosaic Csa F2a 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 Mosaic Csa F2a.