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DNRC Headquarters
1539 Eleventh Ave. Helena, MT 59601
Phone: (406) 444-2074 | Fax: (406) 444-2684
Questions? Email us

Big Hole River Floodplain Study Maps


The Maps display the 1 % Annual-Chance Flood Hazard boundaries (also referred to as the 100-year Floodplain) shaded in Blue, and the 0.2 % Annual-Chance Flood Hazard boundaries (also referred to as the 500-year Floodplain) shaded in Pink. Cross sections are also displayed on the maps with the River Station (red numbers) and 100-year water surface elevations (blue numbers) along the river, also referred to as Base Flood Elevations (BFE). The Hydraulic-Mapping Report summarizes the methodology used to develop the floodplain boundaries and is accompanied by Floodplain Tables and Profiles.

Index – WEST   Index – EAST
W-1   E-1
W-2   E-2
W-3   E-3
W-4   E-4
W-5   E-5
W-6   E-6
W-7   E-7
W-8   E-8
W-9   E-9
W-10   E-10
W-11   E-11
W-12   E-12
W-13   E-13
W-14   E-14
W-15   E-15
W-16   E-16
W-17   E-17
W-18   E-18
W-19   E-19
W-20   E-20
W-21   Download All East Maps  66.7 MB
W-22    
W-23    
W-24    
W-25    
W-26    
W-27    
W-28    
W-29    
W-30    
W-31    
W-32    
W-33    
Download All West Maps 133.3 MB    

(PDF file links viewable with Acrobat Reader.)

Contacts

, PE, CFM
Bureau Chief
Water Operations Bureau
(406) 444-6816


Administrative Support
(406) 444-0862

, CFM
NFIP/CAP Coordinator
(406) 444-6654

, PE
Floodplain Engineer
(406) 444-6664

Tiffany Lyden, CFM
Outreach Specialist
(406) 444-0599


Civil Engineering Specialist
(406) 444-6656

, CFM
Floodplain Specialist
(406) 444-1300


Floodplain Specialist
(406) 444-1343