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You are here:   Home » News » Public Notices » Environmental Assessments » Development, Improvements, and Enhancements » Control of Aquatic Invasive Eurasian Watermilfoil within the Canyon Ferry Wildlife Management Area, Broadwater County, Montana

Control of Aquatic Invasive Eurasian Watermilfoil within the Canyon Ferry Wildlife Management Area, Broadwater County, Montana

Development, Improvements, and Enhancements

03/19/2019

The attached Environmental Assessment (EA) has been prepared to allow aquatic herbicide control of EWM within the west canal and east canals on the Canyon Ferry Wildlife Management Area (CFWMA). If Eurasian Water Milfoil (EWM) spreads and becomes a problem in the CFWMA duck ponds), then there might be a need for aquatic herbicidal control of EWM in the applicable duck ponds in the future. The west canal supplies the water to Pond 4 and the east canal supplies the water to Ponds 2 and 3. This environmental assessment evaluates two alternatives, which includes a No Action Alternative – no aquatic herbicidal control, and the preferred alternative that utilizes aquatic herbicidal chemical control. Under the preferred alternative, it’s expected that aquatic herbicide applications for EWM would likely have to continue indefinitely in the two canals given the steady input of EWM plant propagules from the Missouri River. EWM is found in many upstream areas of the Missouri and Jefferson River watersheds. Any high-flow event could result in EWM levels returning to pre-treatment levels or result in levels higher. Montana Fish, Wildlife & Parks invites you to comment on the attached proposal. The public comment period will be accepted until 5:00 p.m. April 18, 2019. Comments should be sent to the following:

Contact Information

Adam Grove Montana Fish, Wildlife & Parks PO Box 998 Townsend MT 59644 Email: adgrove @mt.gov