Videos

This video demonstrates how to select an appropriate location for an indirect measurement. Theory and initial reconnaissance are discussed. 

This video details how to measure various aspects of a box culvert for a culvert indirect measurement. The video includes tips and tricks for measuring the geometry, wingwall angles, and entrance types including rounded or beveled entrances.
 

This video provides an introduction to the slope-conveyance method of indirect measurement. Theory and background are described as well as high-water mark and cross-section placement. 
 

Video shows periphyton growth along the nearshore of Lake Tahoe. 
 

This video provides an overview of the different indirect measurement methods used by the USGS, as well as a brief description of what you'll need to survey for each. 
 

This video describes the survey requirements for indirect measurements with multiple components, like flow going through a culvert and over a road on top of the culvert at the same time. 
 

In this video, you will learn what and where to survey for a road overflow or broad-crested weir indirect measurement. 
 

This video describes the notes and other metadata that need to be recorded during indirect measurement surveys.
 

This video describes how and where to flag high water marks for a road overflow or broad-crested weir indirect measurement of peak discharge.