WATER-RESOURCES ACTIVITIES OF THE
U.S. GEOLOGICAL SURVEY IN MONTANA,
OCTOBER 1987 THROUGH SEPTEMBER 1989
Compiled by Joanna N. Thamke
U.S. GEOLOGICAL SURVEY
Open-File Report 89-591
Prepared in cooperation with the
STATE OF MONTANA AND OTHER AGENCIES
Helena, Montana 1989 UNITED STATES DEPARTMENT OF THE INTERIOR
MANUEL LUJAN, JR., Secretary
GEOLOGICAL SURVEY
Dallas L. Peck, Director
For additional information Copies of this report can be write to: purchased from:
District Chief U.S. Geological Survey U.S. Geological Survey Books and Open-File Reports Section 428 Federal Building Federal Center, Building 810 301 South Park, Drawer 10076 Box 25425 Helena, MT 59626-0076 Denver, CO 80225-0425 CONTENTS