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Hydrology Training Series Module 112 Open Channel Hydraulics (NRCS-NEDC-000063)

Overview

This module provides background and introduction to Manning’s Equation and presents procedures for the design of drainage ditches, waterways, diversions and emergency spillways.

Objectives

Upon completion of this module, participants will be able to:

  • list the factors that affect the stage relationship in open channels
  • describe the Manning’s Equation (Engineering Field Handbook, (EFH), Chapters 3 and 14) used to design conservation practices
  • use vegetative factors (EFH Chapter 7 and 9) to design conservation practices
  • Use EFH, Chapter 11 to design earth or vegetated emergency spillways for small dams

Prerequisites

Hydrology Training Series Module 106 – Peak Discharge and Module 107 – Hydrographs

References

Engineering Field Handbook, Chapter 3, 7, 9, 11 and 14

Duration

Participant should take as long as necessary to complete the module. Training time for this module is approximately six hours.

Target Audience

This module is intended for all personnel who will be designing small open channel systems or who need a review of basic hydraulics before learning to design larger systems.

Method of Completion

This module is self-study, but the requesting office should select a resource person to answer any questions that the participant’s supervisor is unable to answer

NEDC Contact

Tony Lovell

Technical Coordinator

Quan Quan

Enrollment

Enrollment instructions are provided below.  Be sure to select the appropriate link to ensure successful enrollment. 

USDA Employees

  • Proceed to the Aglearn to login using your USDA eAuthentication ID and password.  This is the same as your WebTCAS ID and password.
  • Select Catalog, Select Natural Resources Conservation Service under Subject Area Menu.
  • Choose the course name by select the button Launch content or Add to Learning Plan to register and complete the course.

District Employees with AgLearn Account

  • Proceed to the Aglearn to login using your USDA eAuthentication ID and password. This is the same logon ID and password used for the TechReg TSP application or profile.
  • Select Catalog, Select Natural Resources Conservation Service under Subject Area Menu.
  • Choose the course name by select the button Launch content or Add to Learning Plan to register and complete the course.
  • If you do not have an account.  Specific instructions on securing a USDA user account and password are located at getting started.  For further assistance contact the USDA state office in your state for assistance in obtaining an eAuthentication ID and password and AgLearn account.

Technical Service Providers

  • Proceed to the Aglearn to login using your USDA eAuthentication ID and password. This is the same logon ID and password used for the TechReg TSP application or profile.
  • Select Catalog, Select Natural Resources Conservation Service under Subject Area Menu.
  • Choose the course name by select the button Launch content or Add to Learning Plan to register and complete the course.
  • If you are anticipating becoming a Technical Service Provider please review the entire process at TechReg.  Please familiarize yourself with this process if you have not already done so.  Specific instructions on securing a USDA user account and password are located at getting started.

Other USDA Customers

  • For those not in the above categories contact the USDA state office in your state for assistance in obtaining an eAuthentication ID and password and AgLearn account.
  • To obtain this contact information for your state you can go to the Aglearn website click on contact us. Scroll down to NRCS and click on the link that says state contacts.

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