USGS Water Data in the Powder and Tongue River Basins

08-Feb-2001

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Table of Contents

USGS Water Data in the Powder and Tongue River Basins

Questions to be Considered

The basic piece of data collected at gaging stations is Stream Stage

Stage can be sensed usingSTILLING WELLS

Stage can also be sensed using PRESSURE TRANSDUCERS

Most users of streamflow information need to know the discharge of the stream

Velocity-Area Method

Dividing Channel Cross Sections

Area of Cross Section

Water Velocity Measurements

Stream Dischare Measurements

Discharge measurements are used to develop rating curves

Discharge must be measured at all stages

Discharge measurements during high stages are particularly important

To maintain ratings, discharge must be measured regularly

Equal Width Increment Sampling

Quality Assurance and Credible Data

WY Hydrologic Accounting Units

Active & Historic Streamgaging Stations

Number of Stations

Number of Stations

Data from USGS gaging stations can be used to meet a variety of needs

USGS Gage Record

USGS Water Data on the WWW

Author: mhbrooks