The creek rises in arid
rangeland southwest of
Pueblo, Colorado. From there, it flows generally northeastward. At a point west of
Saint Charles Reservoir Number 3, the Minnequa Canal – which begins at a diversion dam on the Arkansas River west of Pueblo near
Florence, Colorado – empties into the creek, greatly increasing its flow. The creek also receives water from the St. Charles Flood Ditch. Further downstream, the creek is impounded by Saint Charles Reservoir Number 3 and then Saint Charles Reservoir Number 2. Next the creek flows under
Interstate 25 and then continues northeast through the
Evraz steel mill and other industrial areas, ==Pollution==