AuSable & Manistee River
The AuSable River flows southwards through the eastern part of the township, towards Grayling, while the Upper Manistee River flows southwards through the western part of the township, then veers towards the southwest.
The AuSable River is a major tributary to Lake Huron. The mainstream of the river starts in Frederic Township, and drains a north-south basin that includes 1,932 square miles in north-central lower Michigan. The basin is approximately 90 miles long and 10 to 30 miles wide. The river basin is partially within the Huron National Forest and includes parts of Otsego, Montmorency, Crawford, Osco, Alcona, Roscommon, Ogemaw, and Iosco counties.*
Upper Manistee River
The Upper Manistee River watershed is located in the northwestern portion of Michigan’s Lower Peninsula. It has a drainage area of 590 square miles. The watershed includes parts of five counties: Antrim, Otsego, Crawford, Kalkaska and Missaukee. The mainstream is approximately 78 miles long and originates in southeast Antrim County (approximately six miles from the village of Alba), at an elevation of 1,250 feet.*
*Information is provided by Michigan DNR website at www.michigan.gov/dnr.
Upper Manistee River: https://www.michigan.gov/dnr/0,4570,7-350-79136_79236_82211-95818–,00.html