Alligator Lake Weir dam
Alligator Lake Weir
Alligator Lake Weir, located in Safety Harbor, Florida, is a local government-owned structure designed for flood risk reduction along Alligator Creek. This earth dam stands at a height of 9 feet with a hydraulic height of 6 feet and a length of 103 feet. With a storage capacity of 311 acre-feet and a surface area of 79 acres, the dam serves multiple purposes including flood risk reduction, recreation, and water supply for the surrounding area.
Despite being classified as having a significant hazard potential, Alligator Lake Weir is currently in fair condition as of the last inspection in 2016. The dam's spillway type is uncontrolled with a width of 63 feet, and it is regulated by the Florida Department of Environmental Protection (FDEP) with state permitting, inspection, and enforcement in place. The risk assessment for this structure is moderate, indicating a level 3 risk, and no emergency action plan (EAP) has been reported as of now.
Alligator Lake Weir provides essential flood protection while also offering recreational opportunities and water supply benefits to the community. As climate change and water resource management become increasingly important, structures like Alligator Lake Weir play a crucial role in ensuring the safety and resilience of the region against potential natural disasters and water-related challenges.
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 Alligator Lake Weir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Alligator Creek At Kapok Park At Clearwater Fl | 1 cfs | → |
| Alligator Creek Below Belcher Rd At Clearwater Fl | 1 cfs | → |
| Curlew Creek At Evans Road Near Dunedin Fl | 0 cfs | → |
| Long Branch Near Pinellas Park Fl | 0 cfs | → |
| Roosevelt Canal At Str 23-8 Nr Pinellas Park Fl | 3 cfs | → |
| Lake Tarpon Canal At S-551 | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Alligator Lake Weir.
Boat launches
- Morse Street, Safety Harbor
- Safety Harbor Marina
- Philippe Park
- Park Road, Largo
- Sunlit Cove
- Walsingham Road 11980, Largo
Campgrounds
- Bay Bayou Rv Resort
- Raccoon Creek Military - Macdill Afb
- Coons Creek Military - Macdill Afb
- E G Simmons County Park
- Serenova Tract Campsite
- Fort Desoto County Park
Fishing spots
Track Alligator Lake Weir 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 Alligator Lake Weir
Where does the data for Alligator Lake Weir 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 Alligator Lake Weir.