Invasive Brazilian Waterweed, Sacramento-San Joaquin Delta

a woman pulls vegetation out of the water with a rake

Detailed Description

Landscape ecologist Shruti Khanna uses a threshing rake to collect Brazilian waterweed (Egeria densa) in the Delta. The USGS is conducting research to measure the impact of invasive aquatic vegetation on sediment transport, turbidity, and marsh accretion rates in Delta. 


Image Dimensions: 1216 x 912

Date Taken:

Location Taken: CA, US