Quagga and Zebra Mussel Prevention and Monitoring Program

April 12, 2019

The Program aims to assess the current vulnerability and prevent the introduction of quagga and zebra mussels (dreissenid mussels) into three lower-elevation storage facilities: Scotts Flat, Rollins and Combie Reservoirs.

Funding was obtained through a grant with the Department of Boating and Waterways (DBW) to develop a Vulnerability Assessment and Prevention/Monitoring Plan

The Program assesses the vulnerability of these reservoirs to the introduction of non-native dreissenid mussel species by:
* Monitoring the number of visitors
* Inquire as to the origin of visitors (relative to Dreissenid infested waters)
* Monitor outside equipment that is allowed (rentals)
* Survey the duration of use (day use, slipped/moored)
* Monitor access (managed or unmanaged)
* Prevention efforts being implemented
* Education efforts being implemented

The program is designed to prevent the introduction of non-native dreissenid mussel species includes, at a minimum, all of the following:
* Public education consisting of handouts, flyers, signage, postings and verbal communication and education.
* Monitoring that consists of applying substrate for monitoring the adult and/or larval mussels and water quality conditions to determine viability of adult and/or mussels survival.
* Management of those recreational, boating or fishing activities that are permitted which may include: inspections, decontamination stations and/or information where to decontaminate a vessel, exit inspections and banding of vessels to trailers.

Read the Quagga/Zebra Mussel Vulnerability Assessment Report and Prevention/Monitoring Plan (June 2018)