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Hydrology Training Series Module 209 Design Hydrology (DAMS) (NRCS-NEDC-000104)


This module discusses information NRCS engineers need to know to interpret and use NRCS criteria in TR-60 and Practice Standard 378.  The module discusses sources of data and explains their hydrologic and hydraulic factors governing height of dams. Computer programs are identified.


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

  • interpret hydrologic design criteria in TR-60 and compare with Practice Standard 378
  • identify sources of rainfall-frequency data for applying TR-60 criteria and compare with PS 378 sources
  • explain other hydrologic and hydraulic factors governing the height of dams (Waves, TR-52)
  • identiy computer programs the NRCS uses for hydrologic and hydraulic dam design (DAMS2)


Modules 101 – Introduction to Hydrology, 102 – Precipitation, 104 – Runoff Curve Number Computations, 106 – Peak Discharge, 107 – Hydrographs, 109 – Design Hydrology, and 202 – Precipitation.


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

Target Audience

This module is intended for all NRCS personnel who plan or design conservation practices

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


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

The NRCS eLearning Center is an application used by the NEDC to manage self study learning opportunities and Web-based tests.  It has a number of features including printable certificates and options to email results of tests to your supervisor.  Additional features such as automatically updating training records will be added soon.

If you have any difficulty with the NRCS eLearning Center please contact Sudhakhar Sriparameswaran (Sudha).

Once you initially login to the NRCS eLearning Center, it is not necessary to login again to return to any Web-based course content, if you bookmark the site. 

It is necessary for your system to have pop up windows enabled to view Web-based course content and take exams.

USDA Employees

  • Proceed to the NRCS eLearning Center to login using your WebCAAF eAuthentication ID and password.  This is the same as your WebTCAS ID and password.

Customers (including TSPs) and Partner Employees

  • 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.
  • Proceed to the NRCS eLearning Center to login using your WebCAAF eAuthentication ID and password.

The General Public

  • As a member of the general public you may enroll only in the Web-based courses with a level 1 account. To enroll in self-study courses where materials are mailed to you, you must establish a Level 2 accounts with USDA.
  • For more information on Level 2 account, please go to USDA eAuthentication site.
  • Proceed to the NRCS eLearning Center to login using your WebCAAF eAuthentication ID and password.