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USGS Water Data in the Belle Fourche, Cheyenne, and Niobrara River Basins

08-Feb-2001


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Table of Contents

USGS Water Data in the Belle Fourche, Cheyenne, and Niobrara River Basins

Questions to be Considered

WHY ?

USGS History

HOW ?

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

Stage can be sensed using STILLING WELLS

Stage can also be sensed using PRESSURE TRANSDUCERS

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

Discharge Calculation

Discharge Calculation

Area Calculation

Velocity Calculation

Discharge Calculation

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

WHERE ?

WY Hydrologic Accounting Units

Historical and Active Streamgaging Stations

Years of Record

Start Date of Station

WHAT ?

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

Hydrograph

Hydrograph

Graph

Graph

Graph

Graph

Graph

Graph

Graph

Graph

USGS Water Data on the WWW

Author: mhbrooks