US Long-Term Ecological Research Network
DE expose
DE filter
The geologic materials that characterize the stream bed at a given location. Defined generally as one of the following: 1) gravel 2) cobbles 3) gravel and sand = gravel_sand 4) clay and cobbles = clay_cobbles 5) a stream bed primarily composed of clay = clay_bed 6) sand 7) sand clay and cobbles = sand_clay_cobbles 8) cobbles gravel and sand = cobbles_gravel_sand 9) cobbles and gravel = cobbles_gravel 10) cobbles and sand= cobbles_sand
Stream bed material