Egeria densa
Egeria densa
(Brazilian waterweed)
Plants
Exotic
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Impacts

14 results for Egeria densa (Brazilian waterweed)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
228748 NJ New Jersey1990 Mid-Atlanticestablished
1738011 NJBergen[No locality description provided]2021 02030103 Hackensack-Passaic 
1750764 NJCape May[No locality description provided]2023 02040302 Great Egg Harbor 
1633821 NJHunterdonprivate pond off Old Clinton Road, near the South Branch Raritan River2019 02030105 Raritanestablished
1633795 NJMercer[Hamilton Lakes]2019 02040105 Middle Delaware-Musconetcongestablished
1887681 NJMercer[No locality description provided]2023 02040105 Middle Delaware-Musconetcong 
1891870 NJMercer[No locality description provided]2025 02040105 Middle Delaware-Musconetcong 
1319713 NJMercer[Stony Brook Tributary]2004 02030105 Raritanestablished
1633798 NJMercerStony Brook, north of King George Rd.2017 02030105 Raritanestablished
230941 NJMercerTwin Rivers, Hightstown area1992 02030105 Raritanestablished
1319708 NJMonmouthunspecified Middletown pond1999 02030104 Sandy Hook-Staten Islandunknown
1319709 NJMonmouthunspecified Neptune pond2001 02040301 Mullica-Tomsunknown
1319712 NJSomersetunspecified Warren pond1999 02030103 Hackensack-Passaicunknown
1319711 NJUnionUnion County2013 02030100 Lower Hudsonunknown

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/19/2025].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.