Pearson Lake Dam dam
Pearson Lake Dam
Pearson Lake Dam, located in Williamson, Texas, is a privately owned structure designed by the USDA NRCS and regulated by the TCEQ. Completed in 1980, this earth dam stands at a height of 23 feet and spans 566 feet in length, with a storage capacity of 101 acre-feet. Serving multiple purposes such as recreation and other uses, the dam controls the flow of TR-Battleground Creek and has an uncontrolled spillway with a width of 72 feet.
Despite being rated as "Not Available" in terms of hazard potential and "Not Rated" in condition assessment, Pearson Lake Dam has undergone inspections, with the last one conducted in April 2013. The risk assessment for this dam is moderate, signaling a need for ongoing monitoring and management measures. In the event of an emergency, the dam has two uncontrolled outlet gates, but details on emergency action plans and inundation maps are not available at this time. Overall, Pearson Lake Dam is a vital structure in the region, providing water storage and recreational opportunities while requiring continued attention to ensure its safety and functionality in the face of changing climate conditions.
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 Pearson Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brushy Ck At Kenney Fort Blvd At Round Rock | 114 cfs | → |
| Willis Ck Nr Granger | 57 cfs | → |
| San Gabriel Rv At Laneport | 1,640 cfs | → |
| Brushy Ck At Ih 35 | 94 cfs | → |
| Walnut Ck At Dessau Rd | 14 cfs | → |
| S Fk San Gabriel Rv At Georgetown | 73 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Pearson Lake Dam.
Boat launches
- Lake Pflugerville Park
- County Road 347 1520, Granger
- Williamson County
- Little Webberville Park
- Lake Overlook Road 598, Georgetown
- Cedar Breaks Park Road, Georgetown
Campgrounds
- Taylor - Granger Lake
- Wilson Fox - Granger Lake
- Willis Creek - Granger Lake
- Berry Springs Park And Preserve
- Cedar Breaks - Lake Georgetown
- Jim Hogg - Lake Georgetown
Fishing spots
Track Pearson Lake 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 Pearson Lake Dam
Where does the data for Pearson Lake 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 Pearson Lake Dam.