Egeria densa
Egeria densa
(Brazilian waterweed)
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28 results for Egeria densa (Brazilian waterweed)
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Page:12
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1887643 CAAlameda[No locality description provided]2023 18040003 San Joaquin Delta 
1438508 CAContra Costa[No locality description provided]2012 18040003 San Joaquin Deltaestablished
1438742 CAContra Costa[No locality description provided]2012 18040003 San Joaquin Deltaestablished
1677230 CAContra Costa[No locality description provided]2018 18040003 San Joaquin Delta 
1677416 CAContra Costa[No locality description provided]2021 18040003 San Joaquin Delta 
1738309 CAContra Costa[No locality description provided]2022 18040003 San Joaquin Delta 
1887283 CAContra Costa[No locality description provided]2022 18040003 San Joaquin Delta 
1699577 CAContra Costa[No locality description provided]2022 18040003 San Joaquin Delta 
1438033 CAContra Costaalong e side of Old River Channel near junction with False River; Old River Channel1954 18040003 San Joaquin Deltaestablished
1440669 CAContra CostaBethel Island ne of Brentwood (e end of Gateway Road at w edge of Franks Tract State Recreation Area, ne Contra Costa County); Bethel Island, Franks Tract State Recreation Area1990 18040003 San Joaquin Deltaestablished
259331 CAContra CostaBethel Island, W side of Franks Tract State Recreation Area1960 18040003 San Joaquin Deltaestablished
270838 CAContra CostaDiscovery Bay2010 18040003 San Joaquin Deltaestablished
1438899 CAContra CostaEast side of Italian Slough.2012 18040003 San Joaquin Deltaestablished
1436911 CAContra CostaFranks Tract SRA1987 18040003 San Joaquin Deltaestablished
259327 CAContra CostaFranks Tract State Recreation area (E side of Old River Channel near junction with False River)1954 18040003 San Joaquin Deltacollected
1438600 CAContra CostaWest side West Canal.2012 18040003 San Joaquin Deltaestablished
1887620 CASan Joaquin[No locality description provided; coordinates obscured by collector]2023 18040003 San Joaquin Delta 
1699769 CASan Joaquin[No locality description provided]2022 18040003 San Joaquin Delta 
1887516 CASan Joaquin[No locality description provided]2023 18040003 San Joaquin Delta 
1439542 CASan JoaquinChannel south of islands in Sacramento--San Joaquin Delta on the Fourteen Mile Slough.1999 18040003 San Joaquin Deltaestablished
259328 CASan JoaquinFourteen Mile Slough, islands in Sacramento-San Joaquin Delta1999 18040003 San Joaquin Deltaestablished
1437794 CASan Joaquins.w. Holt (Trapper Slough, Roberts Isl.); Roberts Isl., Trapper Slough1938 18040003 San Joaquin Deltaestablished
259326 CASan JoaquinSan Joaquin River at Stockton1946 18040003 San Joaquin Deltacollected
1438726 CASan JoaquinTrapper Slough, Roberts Island, SW of Holt1938 18040003 San Joaquin Deltaestablished
1336135 CASan JoaquinTrapper Slough, Robert's Island, SW of Holt1938 18040003 San Joaquin Deltaunknown
Page:12

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 [12/18/2025].

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