Zebra Mussel Monitoring Project (ZMMP)

Denton Creek

Creek Status

No Texas Parks and Wildlife Status.

TPWD Status last verified Apr 29, 2021
USGS Data Collection Activities

Creek Map

Blue triangles show USGS data-collection locations.

Explore the ZMMP interactive map

Zebra Mussel Detection Data

Larvae (Veliger) Detections
Most Recent Detection First Date Detected
07/20/2023 0.03 per Liter 11/20/2012

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
07/20/2023 06/07/2013

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.

Water-Quality Graphs

Select a parameter to view graphs of data collected at all Denton Creek sites.

USGS Data Collection Sites

Select a site to view all water-quality data in the USGS National Water Information System (NWIS).