74:51:01:53.01Site specific
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
criterion for irrigation waters -- Belle Fourche River from the Wyoming-South Dakota border to its confluence with the Cheyenne River. The following site-specific criterion for irrigation waters is established for the Belle Fourche River from the Wyoming-South Dakota border to its confluence with the Cheyenne River: Sodium adsorption ratio < 6 See definition
Source: 31 SDR 29, effective September 13, 2004.