East Fork Above Lavon Ws Scs Site 3a Dam dam
East Fork Above Lavon Ws Scs Site 3a Dam
The East Fork Above Lavon WS SCS Site 3a Dam in McKinney, Texas, stands as a crucial structure designed by the USDA NRCS in 1958 to serve primarily as a flood risk reduction measure. With a dam height of 48 feet and a length of 1244 feet, this earth-type dam has a storage capacity of 500 acre-feet and serves multiple purposes including irrigation and recreation. The dam overlooks the TR-Wilson Creek and is regulated by the Texas Commission on Environmental Quality (TCEQ) to ensure its safety and functionality.
Despite being under state jurisdiction and subject to regular inspections, the East Fork Above Lavon WS SCS Site 3a Dam has been deemed to be in satisfactory condition with a moderate risk assessment rating. The spillway is uncontrolled with a width of 128 feet, allowing for a maximum discharge of 3035 cubic feet per second. The dam's emergency action plan (EAP) was last revised in 2017, and while it meets guidelines, there is no inundation map prepared. Overall, this dam serves as a vital infrastructure for local government in managing water resources, reducing flood risks, and enhancing the recreational opportunities in the area.
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 East Fork Above Lavon Ws Scs Site 3a Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Wilson Ck Dws Of Hwy 75 At Mckinney | 28 cfs | → |
| E Fk Trinity Rv Nr Mckinney | 66 cfs | → |
| Doe Br At Us Hwy 380 Nr Prosper | 25 cfs | → |
| Little Elm Ck Nr Aubrey | 23 cfs | → |
| Sister Grove Ck Nr Blue Ridge | 18 cfs | → |
| Indian Ck At Fm 2281 | 10 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near East Fork Above Lavon Ws Scs Site 3a Dam.
Boat launches
- Highland Park Collin County
- Blue Sky Drive The Colony
- Bratonia Park Road Collin County
- Brockdale Park Road Wylie
- Trinity Trail Wylie
- Twin Groves Park Road Collin County
Campgrounds
- Erwin Park - Mckinney
- Constellation Park Campsite #4
- Constellation Park Campsite #3
- Constellation Park Campsite #2
- Constellation Park Campsite #1
- Little Elm Park
Fishing spots
Track East Fork Above Lavon Ws Scs Site 3a 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 East Fork Above Lavon Ws Scs Site 3a Dam
Where does the data for East Fork Above Lavon Ws Scs Site 3a 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 Not Available 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 East Fork Above Lavon Ws Scs Site 3a Dam.