About Lake Ray Hubbard
Sources for characteristics are linked from the characteristic's value. Conservation pool elevation datum is NGVD29.
| Impoundment Year | 1969 |
| Drainage Area | 1,071 mi2 |
| Capacity | 439,559 acre-ft |
| Conservation Pool Elevation | 435 ft |
| Counties | Collin, Dallas, Kaufman, Rockwall |
| Primary Uses | Water Supply , Recreation |
| Additional Resources |
Texas Parks and Wildlife - Lake Ray Hubbard Water Data for Texas - Lake Ray Hubbard Texas Water Development Board - Lake Ray Hubbard |
Texas Parks and Wildlife Status: Suspect
Zebra mussels or veligers (larva) have been detected once.
Lake Map
Blue triangles show USGS data-collection locations.
| Most Recent Detection | First Date Detected | |
|---|---|---|
| 05/21/2024 | Not Detected | 12/01/2010 |
Larvae detection counts are averaged across all sampling sites.
Zebra mussels typically spawn in the spring and autumn as microscopic, free swimming larvae called 'veligers'. The USGS uses fine mesh nets to sample for larvae during the spawning season.
| Most Recent Detection | First Date Detected | |
|---|---|---|
| 05/21/2024 | Not Detected | 06/02/2011 |
Adult detection counts are averaged across all sampling sites.
At the end of their larval stage, zebra mussels attach to a substrate and metamorphose into juveniles. The USGS conducts both visual and SCUBA inspections, and deploys artificial substrates as passive samplers, to get a estimate of the juvenile and adult zebra mussel populations.
Water-quality monitoring is important for studies of zebra mussel survival, growth, and reproduction. Water-quality data are also important for risk assessments for zebra mussel infestation.
Water-Quality Graphs
Select a parameter to view graphs of data collected at all Lake Ray Hubbard sites.
Select a site to view all water-quality data in the USGS National Water Information System (NWIS).