Skip to main content
U.S. flag

An official website of the United States government

Videos

Videos intro.
Filter Total Items: 22
What Does a USGS Hydrologic Technician Do
What Does a USGS Hydrologic Technician Do
What Does a USGS Hydrologic Technician Do

What do USGS Hydrologic Technicians do on the job? This video features five different Hydrologic Technicians from Washington Water Science Center and Nevada Water Science Center sharing some of their work. This video was sponsored by the USGS Hydrologic Data Advisory Committee.
 

What do USGS Hydrologic Technicians do on the job? This video features five different Hydrologic Technicians from Washington Water Science Center and Nevada Water Science Center sharing some of their work. This video was sponsored by the USGS Hydrologic Data Advisory Committee.
 

Surveying High-Water Marks and Cross-Sections for Indirects
Surveying High-Water Marks and Cross-Sections for Indirects
Surveying High-Water Marks and Cross-Sections for Indirects

This video describes how to survey high-water marks and cross-sections for indirect measurements. Included are tips and tricks for getting across non-wadeable sections of the stream.
 

This video describes how to survey high-water marks and cross-sections for indirect measurements. Included are tips and tricks for getting across non-wadeable sections of the stream.
 

Selection of Roughness Coefficients
Selection of Roughness Coefficients
Selection of Roughness Coefficients

This video describes the field selection of roughness coefficients, or Manning's "n" values. Both the comparative (photos) and analytical (Cowan's) methods are discussed.
 

This video describes the field selection of roughness coefficients, or Manning's "n" values. Both the comparative (photos) and analytical (Cowan's) methods are discussed.
 

Plotting High-Water Marks in the Field Using SAC-GUI
Plotting High-Water Marks in the Field Using SAC-GUI
Plotting High-Water Marks in the Field Using SAC-GUI

This video describes how to use SAC-GUI in the field to plot high-water mark profiles. Plotting high-water marks in the field is required for most indirect measurement techniques
 

This video describes how to use SAC-GUI in the field to plot high-water mark profiles. Plotting high-water marks in the field is required for most indirect measurement techniques
 

Theory of the Slope-Area Method
Theory of the Slope-Area Method
Theory of the Slope-Area Method

This video covers the theory behind a slope-area indirect measurement, the most common type of indirect measurement used in the USGS. 
 

This video covers the theory behind a slope-area indirect measurement, the most common type of indirect measurement used in the USGS. 
 

Surveying Slope-Area Measurements
Surveying Slope-Area Measurements
Surveying Slope-Area Measurements

This video goes into detail about where to flag high-water marks and how to survey a slope-area measurement. A simple one-setup Total Station survey is demonstrated.

This video goes into detail about where to flag high-water marks and how to survey a slope-area measurement. A simple one-setup Total Station survey is demonstrated.

Survey Requirements for Critical Depth Indirect Measurements
Survey Requirements for Critical Depth Indirect Measurements
Survey Requirements for Critical Depth Indirect Measurements

This video describes the high-water marks needed along with cross-section locations for critical depth indirect measurements. Critical depth computations are those performed when flow goes through a critical flow regime at a drop, such as at a waterfall. 
 

This video describes the high-water marks needed along with cross-section locations for critical depth indirect measurements. Critical depth computations are those performed when flow goes through a critical flow regime at a drop, such as at a waterfall. 
 

Survey Requirements for Culvert Indirect Measurements - Culvert Survey
Survey Requirements for Culvert Indirect Measurements - Culvert Survey
Survey Requirements for Culvert Indirect Measurements - Culvert Survey

This video describes the survey requirements for culvert indirect measurements, specifically how to measure various aspects of the culvert itself. This video provides a general overview of how to survey culvert attributes, such as the invert and length.
 

This video describes the survey requirements for culvert indirect measurements, specifically how to measure various aspects of the culvert itself. This video provides a general overview of how to survey culvert attributes, such as the invert and length.
 

Survey Requirements for Non-Standard Culverts
Survey Requirements for Non-Standard Culverts
Survey Requirements for Non-Standard Culverts

This video discusses how to measure various aspects of non-standard culverts, such as mitered culverts. Using the slope-area method inside a culvert is also discussed. 
 

This video discusses how to measure various aspects of non-standard culverts, such as mitered culverts. Using the slope-area method inside a culvert is also discussed. 
 

Surveying Indirect Measurements with GNSS
Surveying Indirect Measurements with GNSS
Surveying Indirect Measurements with GNSS

This video details how to survey indirect measurements with GNSS. Both RTN and RTK setups are discussed, along with tips and tricks and troubleshooting.
 

This video details how to survey indirect measurements with GNSS. Both RTN and RTK setups are discussed, along with tips and tricks and troubleshooting.
 

Survey Requirements for Culvert Indirect Measurements - Overview
Survey Requirements for Culvert Indirect Measurements - Overview
Survey Requirements for Culvert Indirect Measurements - Overview

This video describes the survey requirements for culvert indirect measurements, including high-water mark and cross-section locations. 
 

This video describes the survey requirements for culvert indirect measurements, including high-water mark and cross-section locations. 
 

Survey Requirements for Pipe Culverts
Survey Requirements for Pipe Culverts
Survey Requirements for Pipe Culverts

This video demonstrates how to measure various aspects of pipe and pipe-arch culverts for culvert indirect measurements. The video includes tips and tricks for measuring the geometry, corrugations, and entrance types including rounded or beveled entrances.
 

This video demonstrates how to measure various aspects of pipe and pipe-arch culverts for culvert indirect measurements. The video includes tips and tricks for measuring the geometry, corrugations, and entrance types including rounded or beveled entrances.
 

Surveying Slope-Conveyance Indirect Measurement
Surveying Slope-Conveyance Indirect Measurement
Surveying Slope-Conveyance Indirect Measurement

This video shows how to survey a slope-conveyance indirect measurement using a conventional optical or digital level. 
 

This video shows how to survey a slope-conveyance indirect measurement using a conventional optical or digital level. 
 

Site Selection for Indirect Discharge Measurements
Site Selection for Indirect Discharge Measurements
Site Selection for Indirect Discharge Measurements

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

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

Survey Requirements for Box Culverts
Survey Requirements for Box Culverts
Survey Requirements for Box Culverts

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 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.
 

Introduction to the Slope-Conveyance Method
Introduction to the Slope-Conveyance Method
Introduction to the Slope-Conveyance Method

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. 
 

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. 
 

Overview of Indirect Measurements - Survey Requirements
Overview of Indirect Measurements - Survey Requirements
Overview of Indirect Measurements - Survey Requirements

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 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. 
 

Survey Requirements for Road Overflow Indirect Measurements
Survey Requirements for Road Overflow Indirect Measurements
Survey Requirements for Road Overflow Indirect Measurements

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

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

Survey Requirements for Multiple Component Indirect Measurements
Survey Requirements for Multiple Component Indirect Measurements
Survey Requirements for Multiple Component Indirect Measurements

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. 
 

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. 
 

Indirect Measurement Field Notes and Metadata
Indirect Measurement Field Notes and Metadata
Indirect Measurement Field Notes and Metadata

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

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