Great River Conference

Former Members
Andrew, at least 1969-70 thru 1979-80
Bellevue, at least 1969-70 thru 1977-78
East Central, 1974-75 thru 1979-80
East Dubuque (IL), at least 1969-70 thru 1979-80
Marquette Catholic, Bellevue, 1978-79 thru 1979-80
Miles, at least 1969-70 thru 1973-74
Preston, at least 1969-70 thru 1979-80
Sabula, at least 1969-70 thru 1973-74

Membership Changes
1980-81: Preston and East Central leave to help form the Mid-East Conference. Marquette Catholic, Bellevue and Andrew leave for the Wapsie Conference. East Dubuque (IL)?? The league dibands.
1978-79: Marquette Catholic, Bellevue joins the conference. Bellevue leaves for the Big Bend Conference. Membership remains at 5.
1974-75: Miles and Sabula consolidate to form East Central. The new school remains in the league. Membership decreases to 5.
1969-70: Earliest known lineup includes Preston, Miles, Sabula, Bellevue, Andrew, and East Dubuque (IL). Membership is 6.