Lake Seminole Dam dam
Lake Seminole Dam
Lake Seminole Dam, also known as Long Bayou Dam, is a local government-owned structure located in Pinellas County, Florida. Completed in 1949, this earth dam stands at a height of 15 feet and spans a length of 2000 feet along the Long Bayou river. With a primary purpose of recreation, the dam offers a surface area of 320 acres and a storage capacity of 4800 acre-feet, making it a popular destination for water resource and climate enthusiasts seeking outdoor activities.
Managed by the Jacksonville District of the US Army Corps of Engineers, Lake Seminole Dam is regulated by the state of Florida and undergoes regular inspections and enforcement to ensure its structural integrity and safety. Despite being classified as low hazard potential, the dam's condition is currently not rated, indicating a need for further assessment. Emergency action plans are yet to be prepared, highlighting the importance of ongoing risk management measures and guidelines to be implemented in case of potential inundation events.
With its tranquil waters and recreational offerings, Lake Seminole Dam serves as a vital resource for the community and a picturesque backdrop for outdoor enthusiasts. As efforts continue to monitor and maintain the dam's safety, it remains a cherished destination for those seeking to connect with nature and enjoy the benefits of this essential water resource in the heart of Florida's Pinellas County.
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 Seminole Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pinebrook Cn At Bryan Dairy Rd At Pinellas Park Fl | 0 cfs | → |
| Saint Joe Creek At Pinellas Park Fl | 8 cfs | → |
| Long Branch Near Pinellas Park Fl | 0 cfs | → |
| Roosevelt Canal At Str 23-8 Nr Pinellas Park Fl | 3 cfs | → |
| Alligator Creek Below Belcher Rd At Clearwater Fl | 1 cfs | → |
| Alligator Creek At Kapok Park At Clearwater Fl | 1 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Seminole Dam.
Boat launches
- Lake Seminole Park, Seminole
- Walsingham Road 11980, Largo
- Park Road, Largo
- 84th Avenue 199, Treasure Island
- Sunlit Cove
- Coffee Pot Bayou Park
Campgrounds
- Fort Desoto County Park
- Bay Bayou Rv Resort
- Raccoon Creek Military - Macdill Afb
- Coons Creek Military - Macdill Afb
- E G Simmons County Park
- Youth Camping
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
Track Lake Seminole Dam 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 Seminole Dam
Where does the data for Lake Seminole Dam 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 Lake Seminole Dam.