USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Revisions Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas British Columbia California Canton and Enderbury Islands Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Johnston Atoll Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Midway Islands Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Ryukyu Islands, Southern South Carolina South Dakota Swan Islands Tennessee Texas Trust Territories, Pacific Is U.S.Misc Caribbean Islands U.S.Misc Pacific Islands Utah Vermont Virgin Islands Virginia Wake Island Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

This page will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline.

DESCRIPTION:

Latitude 46°59'41.06",   Longitude 112°00'38.40"   NAD83

Lewis And Clark County, Montana, Hydrologic Unit 10030102

Drainage area: 16,924 square miles

Datum of gage: 3,464.11 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1994-10-01	2026-01-22
Daily Data
Temperature, water, degrees Celsius	1999-10-01	2026-01-21	28650
Discharge, cubic feet per second	1945-10-01	2026-01-21	29333
Daily Statistics
Temperature, water, degrees Celsius	1999-10-01	2025-03-20	9241
Discharge, cubic feet per second	1945-10-01	2025-05-20	29087
Monthly Statistics
Temperature, water, degrees Celsius	1999-10	2025-03
Discharge, cubic feet per second	1945-10	2025-05
Annual Statistics
Temperature, water, degrees Celsius	2000	2025
Discharge, cubic feet per second	1946	2025
Peak streamflow	1946-06-03	2023-06-09	78
Field measurements	1948-05-25	2025-12-16	671
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1982-07-12	2013-09-18	368
Water-Year Summary	2006	2024	19
Revisions	Loading...

OPERATION:

Record for this site is maintained by the USGS Montana Water Science Center

Email questions about this site to Montana Water Science Center Water-Data Inquiries