CFR > Title 7 - Agriculture > SUBTITLE B—Regulations of the Department of Agriculture > CHAPTER VI—NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE (parts 600 to 663) > SUBCHAPTER C—WATER RESOURCES (parts 621 to 625) > PART 621—RIVER BASIN INVESTIGATIONS AND SURVEYS > SUBPART B—USDA Cooperative Studies (§621.10 to §621.14)