Keystone Lake Water Conservation Structure dam
Keystone Lake Water Conservation Structure
Keystone Lake Water Conservation Structure, also known as Hil23, is a state-owned conservation structure located in Hillsborough, Florida. This structure, managed by the Florida Department of Environmental Protection, plays a crucial role in flood risk reduction, recreation, and water supply for the surrounding area. With a dam height of 6 feet and a storage capacity of 1851 acre-feet, Keystone Lake provides essential water management services while also offering recreational opportunities for visitors.
Constructed as an earth dam with buttress core types, Keystone Lake features a controlled spillway with a width of 12 feet. The structure's hazard potential is considered significant, with a fair condition assessment as of the last inspection in April 2016. Despite its age, Keystone Lake continues to serve its primary purpose effectively, showcasing the importance of water conservation and management in mitigating flood risks and ensuring a sustainable water supply for the region.
Located in Tampa and managed by the Jacksonville District of the US Army Corps of Engineers, Keystone Lake Water Conservation Structure stands as a vital piece of infrastructure for the local community. With its very high risk assessment rating and state-regulated status, Keystone Lake exemplifies the critical role that water resource management plays in safeguarding against natural disasters and ensuring water security in the face of climate change 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 Keystone Lake Water Conservation Structure -- inflows here typically show up in storage 24-72 hours later.
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Keystone Lake Water Conservation Structure.
Boat launches
- U.S. 19 39620, Tarpon Springs
- Frances Avenue 5698, New Port Richey
- North Pinellas Avenue Tarpon Springs
- Main Street New Port Richey
- Philippe Park
- Nick's Park Boat Ramp
Campgrounds
- Bay Bayou Rv Resort
- Serenova Tract Campsite
- Hillsborough River State Park
- Raccoon Creek Military - Macdill Afb
- Coons Creek Military - Macdill Afb
- E G Simmons County Park
Fishing spots
Track Keystone Lake Water Conservation Structure 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 Keystone Lake Water Conservation Structure
Where does the data for Keystone Lake Water Conservation Structure 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 Keystone Lake Water Conservation Structure.