Hydrilla verticillata Information
Hydrilla is the world’s most successful aquatic invasive plant.
It rapidly spreads and causes severe impact to water quality, native plant and fish communities, recreation, irrigation, and water treatment facilities.
It is difficult and costly to control – multiple chemical applications across multiple years, the high cost of benthic matting and monitoring, and difficulty using triploid grass carp for control.
Orange, Broome, Erie, Kings, Monroe, Nassau, Niagara, Suffolk, Tompkins, Cayuga, Tioga, and Westchester
Finger Lakes PRISM-
Hydrilla growing along 27 acres of Cayuga Lake shoreline, south of Wells College. Project currently led by FL-PRISM.
|Delineation Map and Report prepared by Bob Johnson with Racine-Johnson Aquatic Ecologists: Hydrilla at Aurora NY FINAL 2016 Report|
|Specific threat of Hydrilla to Auora, Cayuga Lake: AuroraCayugaLakeHydrillaTalkingPoints|
|Hydrilla press release, Friday, 4 7 2017|
|Article from the Auburnpub.com: Hydrilla patch in Aurora threatens to spread with no funding, April 7, 2017.|
- SCHUMER: RECENT DISCOVERY OF 27 ACRE AREA OF HYDRILLA IN CAYUGA LAKE MEANS INVASIVE SPECIES COULD SOON CONQUER WATERWAYS; SENATOR PUSHES FOR CRITICAL FED FUNDS TO HELP ERADICATE INVASIVE SPECIES ONCE AND FOR ALL.. read more here: Final Rls Seneca County Hydrilla Event 4.12.2017
- Sen. Schumer Seeks Funds to Fight Weeds in Finger Lakes. Sen. Charles Schumer is calling for $850,000 in federal funding to help remove an invasive weed that could choke out recreation in the Finger Lakes. | April 12, 2017, at 3:01 a.m.: https://www.usnews.com/news/best-states/new-york/articles/2017-04-12/sen-schumer-seeks-funds-to-fight-weeds-in-finger-lakes
- Schumer calls for federal funding to stop spread of invasive weed in Cayuga Lake, By
Other Projects in the Finger Lakes PRISM:
Tinker Nature Park, Henrietta, Monroe County, NY- ~1 acre of an artificially-created open-water pond in the Genesee River Watershed. Project managed by FL-PRISM.
Fall Creek and Cayuga Lake Inlet, Cayuga Lake, Tompkins County, NY project managed by Tompkins County Soul and Water Conservation District. Information available here.
Isolated ponds in Broome County- Management not being addressed at this location.
Tonawanda Creek/Erie Canal managed by the USACE. Information available here.
Click image to left for information about the Great Lakes Hydrilla Collaborative and Risk Assessment in Tonawanda Creek/Erie Canal
Lower Hudson PRISM-
Croton River Hydrilla Control Project managed by NYS DEC. More information available here.
Benthic mats being placed at Tinker Nature Park, Monroe County, NY. Work contracted to Racine Johnson Aquatic Ecologists. Photo: Hilary Mosher, spring 2016
Shallow Northern shelf (5,800 acres) is prime habitat for the fast-growing, highly competitive Hydrilla to flourish and overrun the ecosystem, at which point control of the N. end of Cayuga Lake will be futile.
Due to the Finger Lakes’ heavy human use and high economic activity due to the lakes, Hydrilla is an unparalleled risk in Cayuga Lake proper.
The overall goal of the project is to eradicate Hydrilla from Cayuga Lake near Aurora, its connecting tributaries and prevent its spread further in Cayuga Lake, the other Finger Lakes, and the Great Lakes. Eradication of Hydrilla will help prevent native species decline and habitat loss from Hydrilla in other areas.
Hydrilla (hydrilla verticillata)
Description: Hydrilla is a rooted, submerged, aquatic plant capable of growing in water depths up to 20 feet deep where water clarity is good. Its appearance can vary depending on the conditions under which it is growing. Generally, it is rooted to the bottom of waterways, but it can also survive if fragments break loose and free-float. It has long, slim stems that branch out and can form a mat on the water surface covering areas as large as 100 acres or more.
Threat: Hydrilla has serious economic effects resulting from the ecological impacts. As mentioned before, hydrilla can slow the movement of water, disrupting the water supply, impeding drainage and irrigation. This adds costs to the agricultural economy and also negatively affects real estate values that are dependent upon attractive nearby waterways.
Management: Keeping hydrilla out through information, education, monitoring, and control of infected water bodies. Controlling hydrilla populations while they are still small by harvesting with divers. Controlling large infestations of hydrilla with herbicides or biological control agents. Some herbicides are reasonably selective for hydrilla but must still be used with extreme care to minimize the impact upon native plants and the ecosystem.
NY State Ranking: Very High (Relative Maximum Score >80.00)
Occurrences In Finger Lakes (counties): Broome, Monroe, Tompkins, Cayuga, Tioga
Statewide Hydrilla Conference Call Information:
Statewide Hydrilla Meeting
+1-415-655-0002 US Toll