Lago Grande Dam dam
Lago Grande Dam
Lago Grande Dam, located in Collin County, Texas, was completed in 1973 with a primary purpose of irrigation along the TR-White Rock Creek. Designed by Charles G Starnes, this privately owned earth dam stands at a height of 24 feet and has a length of 800 feet, providing a storage capacity of 143 acre-feet. The dam's spillway is uncontrolled with a width of 15 feet, and it has one uncontrolled outlet gate.
The dam has a moderate risk assessment rating and is regulated by the Texas Commission on Environmental Quality (TCEQ), with state permitting, inspection, and enforcement in place. Despite its age, the condition of Lago Grande Dam is not currently rated, with the last inspection conducted in April 2015. While the hazard potential and emergency preparedness status are not available, the dam meets state jurisdiction requirements and has a history of serving the local irrigation needs efficiently.
For water resource and climate enthusiasts, Lago Grande Dam presents an intriguing case study of a privately owned structure in Texas that plays a crucial role in providing irrigation water to the surrounding area. With a focus on sustainability and safety, ongoing inspections and risk management measures are essential to ensure the continued functionality of the dam and the protection of downstream communities. The dam's location along the TR-White Rock Creek adds to its significance in the local ecosystem, making it a key feature in the water resource management of Collin County.
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 Lago Grande Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Muddy Ck At Creek Crossing Ln Nr Sachse | 14 cfs | → |
| Wilson Ck Dws Of Hwy 75 At Mckinney | 17 cfs | → |
| Rowlett Ck Nr Sachse | 71 cfs | → |
| E Fk Trinity Rv Nr Mckinney | 97 cfs | → |
| Squabble Ck At Shores Blvd Nr Rockwall | · | → |
| Indian Ck At Sh 78 Nr Farmersville | 20 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lago Grande Dam.
Boat launches
- Brockdale Park Road Wylie
- Trinity Trail Wylie
- Highland Park Collin County
- Bratonia Park Road Collin County
- Clearlake Park Road Wylie
- Clear Lake Park Collin County
Campgrounds
- Tent Sites
- Equestrian Camp Sites
- Erwin Park - Mckinney
- Constellation Park Campsite #4
- Constellation Park Campsite #3
- Constellation Park Campsite #2
Fishing spots
Track Lago Grande 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 Lago Grande Dam
Where does the data for Lago Grande 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 Lago Grande Dam.