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Hydrology Training Series Module 251 TR55 Microcomputer Program (NRCS-NEDC-00010

Overview

This module presents information NRCS personnel need to effectively apply the National TR-55 Microcomputer program to estimate runoff volume and peak flows for small watersheds and for small watersheds and for routing through storm water management structures. Included are instructions, activities, and tests to measure learning.

Objectives

Upon completion of this module, participants will be able to use the National Technical Release 55 (TR-55) computer program to obtain runoff volume and peak inflows and to perform shortcut storage routing. In order to accomplish this, they will:

  • load and read the README.1ST file to define the seven executable program files, explain two types of data files and list the advantages of the COUNTY.XX file
  • start the TR-55 System, find the main MENU and HELP screens and develop a Runoff Curve Number
  • enter data into the program to compute Times of Concentration and Travel Times
  • develop peak discharge values using the GRAPHIC Program
  • develop partial hydrographs and peak discharges using the TABULAR Program
  • develop peak outflow discharge and required detention basin storage using the STORAGE Program

Prerequisites

None

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 area and state level NRCS employees who have not previously used the TR-55 or similar computer program

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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