Drainage-area boundaries for selected sampling stations, scale 1:100,000, Yellowstone River Basin, Montana, North Dakota, and Wyoming
As part of the U.S. Geological Survey's National Water-Quality Assessment
Program, an investigation of the Yellowstone River Basin study unit is
being conducted to document status and trends in surface- and ground-water
quality.  Surface-water samples are collected from streams (or lakes) at
specific sampling …