Hydrology Training Series Module 108 Drainage Hydrology (NRCS-NEDC-000059)

Overview

This module presents the method for determining drainage coefficients and their associated use in computation of drainage removal rate capacities. Alternate methods for determining instantaneous peak discharges are presented.

Objectives

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

• describe the background needed to understand drainage hydrology
• compute design drainage removal and peak discharge rates using appropriate hydrology procedures

Prerequisites

Chapters 2 and 14, Engineering Field Manual; Section 16, Drainage, National Engineering Handbook of Conservation Practices, Surface Drainage, Field Ditch (607) and Main or Lateral (608). Stephens, John C., and Mills, M.C. (1965). Using the Cypress Creek Formulas to Establish Run-off rates in the Southern Coastal Plains and Adjacent Flatwoods Land Resource Area. US Department of Agriculture, ARS-41-95.

Duration

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

Target Audience

This module is intended for all NRCS personnel who calculate or analyze drainage capacities.

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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