HIF: Calibrating rain gages
![USGS scientist examines the components of a rain gage instrument.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/USGS_HIF_raingagecalibration_A.jpg?itok=F6E3JhBb)
Detailed Description
A USGS hydrologic technician performs a calibration on a rain gage to verify measurement accuracy. He also evaluates if the instrument performs as the manufacturer claims and if it meets USGS criteria. This ensures that rain-gage measurements collected in the field will be reliable to assist in accurate hydrological reporting.
Sources/Usage
Public Domain.