Zebra Mussel Monitoring Project (ZMMP)

Lake Ray Hubbard

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
Lake Status

Texas Parks and Wildlife Status: Suspect

Zebra mussels or veligers (larva) have been detected once.

Lake Map

Blue triangles show USGS data-collection locations.

Zebra Mussel Detection Data

Larvae (Veliger) Detections
Most Recent Detection First Date Detected
05/20/2020 Not Detected 05/23/2016

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.

Adult or Juvenile Detections
Most Recent Detection First Date Detected
11/15/2019 Not Detected 05/23/2016

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.