Win TR20 Project Formulation Hydrology Computer Program Overview

Win. TR-20 Project Formulation Hydrology Computer Program Overview Presented by: Win. TR-20 Development Team Win. TR-20 Overview March 2009

Objectives l Background of the development: Win. TR 20 computer program l Provide a brief description of the program l Give an overview of the model, including its capabilities and limitations Win. TR-20 Overview March 2009 2

Background l Technical Release 20 Computer Program for Project Formulation Hydrology (TR -20) was first released in 1965 l Revised in 1982, 1983, and 1986 l Revision in February 1992 l Major revision late 1998 Win. TR-20 Overview March 2009 3

Background (continued) l Major revision in late 1998 - Win. TR-20 team was formed. - Win. TR-20 team charge was to: 1. 2. 3. 4. 5. Modernize and revise the TR-20 computer software. Upgrade the source code to Visual Basic. Change the philosophy of data input. Provide plots. Windows interface and output post-processor. - First version of Windows based Win. TR-20 was released in late September 2004. Win. TR-20 Overview March 2009 4

Win. TR-20 New Features l Muskingum-Cunge Channel Routing replaces ATT-KIN l Sub-Area / Reach Routing Concept replaces old Standard Control l Runoff Curve Number (RCN) Calculation Option l Time of Concentration (Tc) Calculation Option Win. TR-20 Overview March 2009 5

Win. TR-20 New Features (continued) l Graphics - Hydrographs - Reach / Structure Rating - Schematic Win. TR-20 Overview March 2009 6

Model Overview l Win. TR-20 System Controller / Editor l Capabilities / Limitations l Minimum Data Requirements Win. TR-20 Overview March 2009 7

Win. TR-20 System Controller / Editor File l File - New Win. TR-20 File New! - Open Existing Win. TR-20 File - Re. Open Last Session - Convert Old Data - Import HEC-RAS - Import NOAA Atlas Data - Local Land Use - Local Soil / HSG - Save As - Exit Win. TR-20 Overview March 2009 8

Win. TR-20 System Controller / Editor View l View - Schematic - Input File - Printed Page File - Error File - Debug File - Hydrograph File - Flood. Econ File - Smoothed NOAA File Win. TR-20 Overview March 2009 9

Win. TR-20 System Controller / Editor Run l Run Win. TR-20 Overview March 2009 10

Win. TR-20 System Controller / Editor Plots l Plots - Hydrograph - Storm - Peak Flow - Time Analysis - Alternate - Location Win. TR-20 Overview March 2009 11

Win. TR-20 System Controller / Editor Help l Help - Win. TR-20 System Diagram - Overview - Help Facilities - Getting Started - About Controller / Editor - Smoothing NOAA 14 Data Win. TR-20 Overview March 2009 12

Win. TR-20 System Controller / Editor – Data Section l l l l Alternate Analysis: Dimensionless Unit Hydrograph: Duration Increment: Global Output: Input Hydrograph: Rainfall Distribution: Stream Cross Section: Stream Reach: Storm Analysis: Structure Rating: Sub-Area: Time Analysis: Win. TR-20: Version 1. 11 Verification: Win. TR-20 Overview March 2009 13

Win. TR-20 Identifier Window l Win. TR-20: Version 1. 11 - Input Units Code: - Output Units Code: - Minimum Hydrograph Value: - Watershed Description: Win. TR-20 Overview March 2009 14

Close Window Buttons l Two choices are given on most screens: - Accept Changes (Close) – All data shown will written to the input fi - No Changes (Close) – None of the changes made to items in that win Win. TR-20 Overview March 2009 15

Sub-area/Reach Concepts l l Watershed - system of sub-areas and reaches Sub-areas - watersheds that generate runoff - feed into the upstream end of reaches l Reaches or Routing Elements- represent watershed stream flow paths or structures – Channel Routing elements - Stream Reaches – Structure Routing elements - Reservoir/Structure Reaches l Watershed Outlet -final reach (required for all watersheds) Win. TR-20 Overview March 2009 16

Sub-area/Reach Concepts l l l Win. TR-20 Overview March 2009 Watershed - system of sub-areas and reaches Sub-areas - watersheds that generate runoff Reaches - represent watershed flow paths (stream channels) or structures 17

Sub-area Connectivity Sub-area Win. TR-20 Overview Receiving Reach A 1 R 1 (storage) A 2 R 2 (stream) A 3 Outlet March 2009 18

Reach Connectivity Upper Reach Receiving Reach R 1 (res. ) R 2 (stream) Outlet R 2 Win. TR-20 Overview March 2009 19

Schematics Sub-area 2 Reach 2 Outlet (Reach Routing) Reach 1 (storage routing) Sub-area 3 1 a e r a b- Legend Su Storage Area Sub-Area Inflow Points Win. TR-20 Overview March 2009 20

Win. TR-20 Schematics Win. TR-20 Overview March 2009 21

Sub-Area: Window l Sub-Area: - Sub-Area Identifier: - Sub-Area Reach Identifier: - Sub-Area Rain Gage Identifier: - Sub-Area Peak Output Code: - Sub-Area Hydrograph Output Code: - Sub-Area Time Analysis Code: - Sub-Area Hydrograph File Code: l Land Use Details l Tc Details Win. TR-20 Overview March 2009 22

Help Window l Click on text variable name. Click on it again to rem Win. TR-20 Overview March 2009 23

Stream Reach: Window Win. TR-20 Overview March 2009 24

Stream Cross Section: Window Win. TR-20 Overview March 2009 25

Structure Rating: Window Win. TR-20 Overview March 2009 26

Storm Analysis: Window Win. TR-20 Overview March 2009 27

Global Output: Window Win. TR-20 Overview March 2009 28

Rainfall Distribution: Window Win. TR-20 Overview March 2009 29

Input Hydrograph: Window Win. TR-20 Overview March 2009 30

Dimensionless Unit Hydrograph: Window Win. TR-20 Overview March 2009 31

Time Analysis: Window Win. TR-20 Overview March 2009 32

Alternate Analysis: Window Win. TR-20 Overview March 2009 33

Verification: Window Win. TR-20 Overview March 2009 34

Output l Graphical l Tabular Win. TR-20 Overview March 2009 35

File Management within Win. TR-20 l Input file l Output file l Hydrograph file “example. hyd” l Error file l Debug file Win. TR-20 Overview March 2009 “example. inp” “example. out” “example. err” “example. dbg” 36

Capabilities & Limitations l l l l Types of reaches Channel or Structure Channel Manning “n” 0. 005 -1. 00 Reach Routing Muskingum-Cunge Sheet Flow Max. Length 100 feet Runoff Curve Number 30 -100 Weighted Curve Number 30 -100 Drainage Area 1 acre to 300 square miles Single sub-area min 1 acre - max 20 sq. miles Win. TR-20 Overview March 2009 37

Minimum Data Requirements l Data required for a single sub-area run can be entered on the Win. TR-20 System Controller/Editor Main Window. These data include: – Win. TR-20 Identifier – Input and Output Units Code, Minimum Hydrograph Value, and Watershed Description – Storm Analysis Identifier – Gage Rain Table (Type I, etc. ), Gage Antecedent Runoff Condition, and Rainfall Data – Sub-Area Identifier – Reach, Drainage Area, Weighted Curve Number, Time of Concentration (Tc), and Output Code (Peak, Hydrograph, Time Analysis, and Hydrograph File) – Global Output (at least one item selected). Win. TR-20 Overview March 2009 38

User Responsibility l Results from the model can be sensitive to the input data. l It is the user’s responsibility to ensure that all the input data (whether it is actually entered or implied through default values for blank data fields) is appropriate. Win. TR-20 Overview March 2009 39

Win. TR-20 web sites l NRCS users may find Win. TR-20 by: Contact your state ITS for download l Non-NRCS users may find Win. TR-20 at: http: //www. wsi. nrcs. usda. gov/products/W 2 Q/ H&H/Tools_Models/Win. TR 20. html l E-mail questions to: LO-OR-NRCS-TR 20@one. usda. gov Win. TR-20 Overview March 2009 40

Win. TR-20 Development Team l l l l l William H. Merkel Helen Fox Moody Quan Dan Moore John Mc. Clung Pete Cooper Geoff Cerrelli Thom Garday Don Woodward Roger Cronshey Win. TR-20 Overview Maryland 301 -504 -3956 Maryland 301 -504 -3948 Maryland 301 -504 -3952 Oregon 503 -414 -3054 Arkansas 501 -210 -8902 Minnesota 651 -602 -7884 Pennsylvania 717 -237 -2214 Arkansas 501 -210 -8905 NRCS-Retired March 2009 41

Summary l Reviewed the background of the development for Win. TR-20 l Provided a brief description of the Program l Gave an overview of the model including its capabilities and limitations Win. TR-20 Overview March 2009 42

The End Win. TR-20 Overview March 2009 43

Win. TR-20 Overview March 2009 44