Zebra Mussel Monitoring Project (ZMMP)

Grapevine Lake

About Grapevine Lake

Sources for characteristics are linked from the characteristic's value. Conservation pool elevation datum is NGVD29.

Impoundment Year 1969
Drainage Area 695 mi2
Capacity 163,064 acre-ft
Conservation Pool Elevation 535 ft
Counties Denton, Tarrant
Primary Uses Water Supply , Flood Control , Recreation
Additional Resources Texas Parks and Wildlife - Grapevine Lake
Water Data for Texas - Grapevine Lake
Texas Water Development Board - Grapevine Dam and Lake
US Army Corps of Engineers - Grapevine Lake Levels
Lake Status

Texas Parks and Wildlife Status: Infested

The water body has an established, reproducing population of zebra mussels.

Lake Map

Blue triangles show USGS data-collection locations.

Zebra Mussel Detection Data

Larvae (Veliger) Detections
Most Recent Detection First Date Detected
08/22/2023 0.01 per Liter 10/25/2011

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
08/22/2023 06/06/2012

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 Data

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.