The following Timing Units are contained in this District:

Coos Bay and River to Millicoma - S Fk Coos R confluence
Coquille R and tribs
Coquille R estuary - mouth to Bear Cr
Millicoma R and South Fork Coos R and tribs
North Umpqua R above Soda Springs Dam
North Umpqua R below Soda Springs Dam
North Umpqua R tribs below Soda Springs Dam
Other Mid-Southcoast Coastal tribs
South Umpqua R
South Umpqua R tribs
Southcoast Coastal Lake tribs
Umpqua Bay and Smith Estuary
Umpqua R - Scottsburg and above
Umpqua R tribs