Hydrology Appendix
http://www.blm.gov/pgdata/etc/medialib/blm/mt/field_offices/miles_city/og_eis/vol2.Par.74017.File.dat/HydrologyApp.pdf

Bureau of Land Management: Montana State Office


This 40-page PDF is part of the final statewide oil and gas environmental impact statement and proposed amendment of the Powder River and Billings Resource Management Plans. This section is a hydrology appendix for the Crow Reservation. Included is a summary of the water resources technical report, which provides information pertaining to groundwater quality and quantity, surface water quality and availability, produced water management, water conservation, water rights, and groundwater resource assessment as they relate to coal bed methane development.

This resource is referenced here:
Subject: Geoscience:Hydrology:Surface Water, Environmental Science:Energy:Fossil Fuels, Geoscience:Hydrology:Ground Water,
Resource Type: Scientific Resources:Overview/Reference Work
Topics: Hydrosphere/Cryosphere:Surface Water, Groundwater