Zebra Mussel Monitoring Project (ZMMP)

Hubbard Creek Reservoir

About Hubbard Creek Reservoir

Sources for characteristics are linked from the characteristic's value. Conservation pool elevation datum is NAVD88.

Impoundment Year 1962
Drainage Area 1,085 mi2
Capacity 313,298 acre-ft
Conservation Pool Elevation 1,183 ft
Counties Stephens
Primary Uses Water Supply , Recreation
Additional Resources Texas Parks and Wildlife - Hubbard Creek Reservoir
Water Data for Texas - Hubbard Creek Reservoir
Texas Water Development Board - Hubbard Creek Reservoir
Reservoir Status

No Texas Parks and Wildlife Status.

USGS Data Collection Activities

Reservoir Map

Blue triangles show USGS data-collection locations.

Zebra Mussel Detection Data

Larvae (Veliger) Detections
Most Recent Detection First Date Detected
08/28/2019 Not Detected 07/09/2015

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
08/28/2019 Not Detected 07/24/2019

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.