WordNet (r) 3.0 (2006):

river bottom
    n 1: a channel occupied (or formerly occupied) by a river [syn:
         riverbed, river bottom]

U.S. Gazetteer Places (2000):

River Bottom, OK -- U.S. Census Designated Place in Oklahoma
   Population (2000):    265
   Housing Units (2000): 113
   Land area (2000):     9.237116 sq. miles (23.924019 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    9.237116 sq. miles (23.924019 sq. km)
   FIPS code:            63537
   Located within:       Oklahoma (OK), FIPS 40
   Location:             35.635115 N, 95.238581 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    River Bottom, OK
    River Bottom