Glyceria maxima

Reed mannagrass

Collection Information for Glyceria maxima

Results limited to All Great Lakes Drainages.
To see the collection list for the entire United States, click here.
 Results also available in (click to export table to spreadsheet)

(click table headers to sort)
Specimen IDStateCountyLocalityYearHUC NumberDrainage NameStatus
1653632WIRacineRacine Co. Evans Park greenspace west if Fawn Trail201704040002Pike-Rootestablished
1653613WIWinnebagopond system at Heckrodt Wetland Reserve201604030204Lower Foxestablished
1653633WIKenoshaPike River Greenspace, east of HWY 31 and Hiking trail201704040002Pike-Rootestablished
1653634WIRacineWetland Four Mile Rd and 33201704040002Pike-Rootestablished
1653636WIWaukeshaWirth Park201704040003Milwaukeeestablished
1653637WIWaukeshaBrookfield East High School201704040003Milwaukeeestablished
1653638WIWaukeshadrainage ditch along Fountain Blvd and Stanley Dr201704040003Milwaukeeestablished
1653643WIRacineWetland Root River River Dr.201704040002Pike-Rootestablished
1653645WIWaukeshaDousman Ditch at W Roualt St201704040003Milwaukeeestablished
1653646WIWaukeshaDousman Ditch at foot bridge south of W North Ave201704040003Milwaukeeestablished
1653647WIWaukeshaDousman Ditch at Cascade Dr201704040003Milwaukeeestablished
240781ON Lake Ontario marsh between Hamilton and Dundas, Ontario194004270103 established
1656967  North Monaghan Twp., Peterborough Airport, 12km NE of Millbrook Post Office199904270204Otonabee Riverestablished
1656968ON Simcoe County, 9 miles WNW of Barrie197204220004Nottawasaga River-Frontal Lake Huronestablished
1656969ON Simcoe County, Lot 20, Conc. III, Sunnidale tp. 3 miles north of Angus197804220004Nottawasaga River-Frontal Lake Huronestablished
1656970ON Burlington (Aldershot), Valley Inn to Hendrie Valley, W and N side of Grindestone Creek199304270103Sixteen Mile Creek-Frontal Lake Ontarioestablished
1656971ON Bruce County, near Schmidt Lake in Greenock Swamp, Greenock Tp.198704230003Saugeen Riverestablished
1656972ON Grey County, Bruce Peninsula, 2 Miles E of Wiarton198204240002Lake Huronestablished
1653651WIWaukeshaDitch along north side of Bugline Trail201704040003Milwaukeeestablished
1653620WIRacinePike River - Rexnord Inc201704040002Pike-Rootestablished
1653621WIRacineWetland AIS - N Branch Pike River near Hwy 20201704040002Pike-Rootestablished
1653622WIRacineWetland N Branch Pike River S. Summerset Dr201704040002Pike-Rootestablished
1653623WIRacineWetland Pike River Oakes Rd201704040002Pike-Rootestablished
1653624WIRacineMount Pleasant Pike River drainage culvert201704040002Pike-Rootestablished
1653625WIRacineNorth Branch Pike River Greenspace Mt Pleasant greenspace 1 - NB Pike River201704040002Pike-Rootestablished
1653626WIRacineNorth Branch Pike River Greenspace Mt Pleasant greenspace 2 NB Pike River201704040002Pike-Rootestablished
1653627WIRacineNorth Branch Pike River Greenspace Mt Pleasant greenspace 2 NB Pike River201704040002Pike-Rootestablished
1653628WIRacineNorth Branch Pike River Greenspace Mt Pleasant greenspace 4 - NB Pike River201704040002Pike-Rootestablished
1656973ON Algoma Co., Algoma District, south side of the town of Spanish, west of cemetery198104240002Lake Huronestablished
1656974ON Manitoulin Island, Hwy 540 jnct. with rd. to Silver Lake, Robinson Twp.197604240001Manitoulin Islandestablished
1656975ON Algoma County, Hwy 17, Serpent River, The North Shore Township Municipality198904200006Serpent River-Frontal Lake Huronestablished
1426121WIAshlandDevil's Creek201404010302Bad-Montrealestablished
1556686ON [No locality description provided]201304270103Sixteen Mile Creek-Frontal Lake Ontarioestablished
1556684ON [No locality description provided]201304270103Sixteen Mile Creek-Frontal Lake Ontarioestablished
1649531WIMilwaukeeOak Creek at Puetz Rd And Rr Track201704040002Pike-Rootestablished
1649534WIWaukeshaWetland Underwood Creek. Waukesha Co emergent wetland south of Beverly Hills Trail and Underwood Creek201704040003Milwaukeeestablished
1649652WIMilwaukeeCulvert at W Hampton and N 47th St, City of Milwaukee201704040003Milwaukeeestablished
1649656WIMilwaukeeLincoln Creek footbridge at N 37th St201704040003Milwaukeeestablished
1649657WIMilwaukeeLincoln Creek west of railroad yard201704040003Milwaukeeestablished
1649658WIMilwaukeeLincoln Creek bridge at N Sherman Blvd201704040003Milwaukeeestablished
1649671WIWaukeshaUnderwood Creek at Pomona Dr201704040003Milwaukeeestablished
1649660WIMilwaukeeWetland Lincoln Creek and West Lincoln Parkway201704040003Milwaukeeestablished
1649661WIMilwaukeeLincoln Creek at 47th Street At Milwaukee Wi And Settling Tank Outlet/Inlet201704040003Milwaukeeestablished
238557ILLakeIllinois Beach State Park200604040002Pike-Rootunknown
238558WIDoorWhitefish Bay Road, N. of Sturgeon Bay200304030102Door-Kewauneecollected
229915WIMilwaukeeOak Creek197904040002Pike-Rootestablished
1401074MIKalamazooGourdneck Creek, between 23rd St and Portage Rd201704050001St. Josephestablished
1401075MIGeneseeFlint201604080204Flintunknown
1397192ILLakeIllinois Beach State Park South Unit200804040002Pike-Rootunknown
1422396WICalumetHWY BB south of 10201604030101Manitowoc-Sheboyganestablished
1422402WIMilwaukeeHubbard Park - iNaturalist Record201704040003Milwaukeeestablished
1426886WIKenoshaPike River - iNaturalist Record #1201704040002Pike-Rootestablished
1426887WIKenoshaPike River Floodplain Glyceria maxima population 4201704040002Pike-Rootestablished
1426954WIKenoshaPike River Floodplain Glyceria maxima population 2201704040002Pike-Rootestablished
1427032WIKenoshaPike River Floodplain Glyceria maxima population 1201704040002Pike-Rootestablished
1427319WIKenoshaPike River Floodplain Glyceria maxima population 3201704040002Pike-Rootestablished
1556682ON [No locality description provided]201304270103Sixteen Mile Creek-Frontal Lake Ontarioestablished
1649659WIMilwaukeeWetland Lincoln Creek W. Villard201704040003Milwaukeeestablished
1649650WIMilwaukeeUnnamed open space 0.19 km S of 190 and 0.19 km west of N Morris Blvd. Milwaukee River, South of Capitol Dr. Oak Leaf Trail201704040003Milwaukeeestablished
1649651WIMilwaukeeUnnamed ditch north of Lincoln Creek201704040003Milwaukeeestablished
1649653WIMilwaukeeDrainage canal west of N 46th St, City of Milwaukee. Drainage Ditch N. 46th St and HWY EE201704040003Milwaukeeestablished
1649654WIMilwaukeeWetland Unnamed Trib to the Root River. Near E. Elm Rd.201704040002Pike-Rootestablished
1649655WIMilwaukeeWetland Milwaukee River on N. Cambridge201704040003Milwaukeeestablished
1762113NYWyoming[No locality description provided]199404270101Niagara River 
1878382MILuceDollarville Flooding202104020202Tahquamenon 
1878383MILuceDollarville Flooding202104020202Tahquamenon 

Citation for this information:
U.S. Geological Survey, 2025, Glyceria maxima: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 12/8/2025