Water Monitoring Post-Herbicide 2013

NYS Department of Environmental Conservation (DEC), and Tompkins County Health Department (TCHD), developed monitoring protocols for endothall and fluridone, which are part of the DEC permits for herbicide use. This monitoring is required. Additional monitoring was conducted during fluridone treatment to ensure adequate herbicide levels are maintained throughout treatment.

Monitoring of herbicide concentrations is designed to fulfill three purposes:

Drinking Water Safety (TCHD sites)
Environmental Protection (DEC sites)
Maintenance of adequate herbicide levels for effective treatment (monitored by the Hydrilla Task Force after endothall application and by the Task Force and SePRO, the manufacturer of Sonar, during fluridone treatment)

Below are the monitoring maps for the 2013 season.

Monitoring Maps

2013 Endothall Monitoring Cayuga Inlet - Hydrilla Treatment 2013 Endothall Monitoring/Treatment Fall Creek - Hydrilla Treatment

Last updated July 26, 2019

Water Monitoring

Endothall Monitoring in Fall Creek

Because a new population of hydrilla was found and treated with endothall during the 2013 season, monitoring was required for this area of water. Fall Creek monitoring and analysis followed the same exact protocols and labels as the rest of the Cayuga Watershed except for the following:

Water sampled were collected immediately after treatment on September 26, 2013, as well as 24. 48, and 72 hours post-treatment.
Additional samples were collected within the treatment area and Bolton Point on days 8, 15, and 22 of post-treatment.
Water Samples for DEC were collected 24, 48, and 72 hours after treatment and on day 8 to ensure that the herbicide did not spread beyond the treatment area.

Cornell Cooperative Extension

Tompkins County