Sediment Metals in Caddo Lake
In lakes, sediments often act as repositories for chemicals such as metals
Metals in sediments generally are in higher concentration than metal concentrations in water
Sediment metals have been sampled recently by the TNRCC Clean Rivers Program and by the USACE around Longhorn
Sampling has found high levels of some sediment metals
Highest concentrations are found at the surface (top 6 inches) which is the area of most recent deposition
Highest concentrations were found in the upper end of the