Stream Side Riparian Area

 

The Riparian area is interpreted as a minimum of 35' from the stream bank along the stream.  The stream is usually the lowest point in the watershed, so groundwater  along with any overland flow during rain or snow events is where the water source for a stream originates.  The floodplain is within the riparian area and connected to the stream to carry water during the peak flow climate events such as rain and snow. 

The 35' minimum has been set by ODA as a standard for initial aerial inventory purposes.  The inventory ODA is doing is to look at the vegetation community along the 35' buffer for the stream to determine if it is adequate to protect water quality.