What was the length, in the 1980's, of the river John J Conway used as a source of water for the settlers to whom he sold land ?
John J. Conway:  Subdivided parcels were sold to arriving settlers and water was pumped from the Rio Grande by means of a pumping station called the First Lift Station and distributed to the residents of the Rio Grande Valley through the Mission Canal Co. Rio Grande:  According to the International Boundary and Water Commission, its total length was 1896 mi in the late 1980s, though course shifts occasionally result in length changes.
1896 mi