Lake Vedra Dam dam
Lake Vedra Dam
Lake Vedra Dam in St. Johns, Florida, is a privately-owned structure designed for flood risk reduction along the Guana River. With a height of 12 feet and a hydraulic height of 9 feet, the dam serves multiple purposes including flood risk reduction, recreation, and water supply. It has a storage capacity of 282 acre-feet and covers a surface area of 42 acres, with a drainage area of 2.36 square miles.
The dam features a controlled spillway with a width of 20 feet and a slide gate for outlet control. Despite being classified as having a significant hazard potential, the dam is currently in fair condition as of its last inspection in May 2017. The risk assessment for Lake Vedra Dam is very high (1), indicating the importance of implementing proper risk management measures to ensure the safety and integrity of the structure. Located in Ponte Vedra Beach, this earth dam plays a crucial role in protecting the surrounding area from flooding while also providing recreational opportunities and water supply support for the community.
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 Vedra Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Julington Crk At Old St August Rd Nr Bayard | 164 cfs | → |
| Pottsburg Creek Nr South Jacksonville | 51 cfs | → |
| St. Johns River At Jacksonville | 154,000 cfs | → |
| Cedar River At San Juan Ave At Jacksonville | 27 cfs | → |
| Ortega River At Kirwin Rd Nr Jacksonville | 8 cfs | → |
| North Fork Black Creek Nr Middleburg | 41 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Vedra Dam.
Boat launches
- West Palm Vally Landing
- Six Mile Landing
- Oak Harbor
- Beach Boulevard 9540, Jacksonville
- Joe Carlucci - Sisters Creek
Campgrounds
- Osprey Cove Military - Mayport Ns
- Hanna City Park
- Pelican Roost Rv Military - Mayport Ns
- Huguenot City Park
- Little Talbot Island State Park
- Jacksonville Nas Rv Military
Fishing spots
Paddle runs
- Begins Approximately 1 Mile Upstream Of Flea Hill, Georgia To The Bells River Confluence
- The Confluence Of The North Prong And Middle Prong To Trader's Hill
- Begins Approximately 1 Mile Downstream Of U.S. 301 Crossing To Ends Approximately 1 Mile Upstream Of Flea Hill, Georgia
- Trader's Hill To Ends Approximately 1 Mile Downstream Of U.S. 301 Crossing
Track Lake Vedra 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 Vedra Dam
Where does the data for Lake Vedra 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 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 Lake Vedra Dam.