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                  <text>Known Positive Waters for ANS in Colorado – January 2018
Definition from the ANS Act (SB08-226): "AQUATIC NUISANCE SPECIES" MEANS EXOTIC OR NONNATIVE AQUATIC
WILDLIFE OR ANY PLANT SPECIES THAT HAVE BEEN DETERMINED BY THE BOARD TO POSE A SIGNIFICANT THREAT TO
THE AQUATIC RESOURCES OR WATER INFRASTRUCTURE OF THE STATE.”
Animals:
Common Name

Scientific Name

Status in Colorado

Crayfish, rusty

Orconectes rusticus

Present in CO

Mussel, quagga
Mussel, zebra

New Zealand
mudsnail

Waterflea, spiny
Waterflea, fishhook

Dreissena
rostriformis bugensis
Dreissena
polymorpha

Potamopyrgus
antipodarum

Bythotrephes
cederstroemi
Cercopagis pengoi

Location in Colorado
Catamount Reservoir, Yampa River, Stagecoach Reservoir,
and Sanchez Reservoir

Present in CO

Green Mountain Reservoir (Suspect)

Not Present in CO

No known

Present in CO

Bear Canyon Creek, City of Boulder - Boulder Creek, Dry
Creek (2), Chatfield Reservoir, Dinosaur NM – Green River,
Gunnison River (East of Delta), Pike NF - South Platte River
below Eleven Mile Dam, Eleven Mile Reservoir State Park,
Spinney Mountain Reservoir State Park, Charlie Meyer State
Wildlife Area (Dream Stream), South Delaney Buttes
Reservoir and East Delaney Buttes Reservoir in Delaney
Buttes State Wildlife Area, College Lake at CSU Fort Collins,
Fountain Creek in Colorado Springs, Uncompahgre River,
4Mile Canyon Creek, Monument Lake

No verified presence

No Known

No verified presence

No Known

Location in Colorado
No Known
Jefferson Lake, NTP Ponds, Spinney Mountain
Adobe Creek SWA, Arvada Reservoir, Bear Canyon Creek,
Bessemer Ditch, Big Dry Creek, Blue Heron Ponds, Boulder
Creek, Brush Hollow, Chatfield Reservoir, CU Ponds in
Boulder, Bow Mar Lake, Bowles Reservoir, Brush Hollow
Reservoir, Charlie Meyer SWA, Douglas Reservoir, Eleven
Mile State Park, Gateway Reservoir (Private), Horseshoe and
Martin Reservoirs in Lathrop SP, Lake Minnequa, Lowell
Ponds, Marston Reservoir, Minnequa Canal (Fremont
Canal), Monument Lake, Navajo Reservoir(NM Side), North
Poudre Reservoir #4, Panama Reservoir #1, Pathfinder Park
Pond, Pavlakis Open Space, Pella Crossing Ponds, Prospect
Lake, Pueblo Reservoir, Pueblo Steel Mill, Rio Grande River,
Saint Charles Reservoir#2, #3, Saint Vrain Creek, Saint Vrain
State Ponds, Sawhill Ponds, Sheets Lake, Skaguay Reservoir,
South Platte River, Standley Lake (Westminster), Swift
Ponds, Tucker Lake, Tule Lakes, Walden Pond, Ward Road
Ponds, Wellington Reservoir #4, West Lake, West Prospect
Park Lake, Aurora Reservoir, Cherry Creek Reservoir, Lon
Hagler Reservoir

Plants:
Common Name
African elodea
Brazilian elodea

Scientific Name
Lagarosiphon major
Egeria densa

Status in Colorado
No verified presence
Present in CO

Eurasian watermilfoil

Myriophyllum
spicatum

Present in CO

Hybrid invasive
watermilfoil

Myriophyllum
spicatum x
Myriophyllum
sibiricum

Present in CO

Cigar Pond in Chatfield State Park, Cherry Creek Reservoir
State Park (near swim beach), Golden Pond in Longmont,
Saint Vrain State Park-Pelican

�Giant salvinia

Salvinia molesta

No current verified
presence

Hyacinth, water

Eichhornia crassipes

Present in CO

Hydrilla

Hydrilla verticillata
Myriophyllum
aquaticum
Nymphoides peltata

No verified presence

Alamosa (2006)
Centennial (detected and eradicated in 2010)
No Known

No verified presence

No Known

No verified presence

No Known

Parrotfeather
Yellow floating heart

No Known

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              <text>Definition from the ANS Act (SB08-226): "AQUATIC NUISANCE SPECIES" MEANS EXOTIC OR NONNATIVE AQUATIC WILDLIFE OR ANY PLANT SPECIES THAT HAVE BEEN DETERMINED BY THE BOARD TO POSE A SIGNIFICANT THREAT TO THE AQUATIC RESOURCES OR WATER INFRASTRUCTURE OF THE STATE.”</text>
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              <text>Colorado Parks &amp; Wildlife</text>
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              <text>Aquatic nuisance species</text>
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