Win TR55 Small Watershed Hydrology Win TR55 Development

Win. TR-55 Small Watershed Hydrology Win. TR-55 Development Team

Common Hydrology of Urbanization Win. TR-55 12/6/2020 TR-55 Update 2

Win. TR-55 S O D Windows 12/6/2020 TR-55 Update 3

Tutorial n. Demonstrate Win. TR-55 n. Create Win. TR-55 Input File n. Run Win. TR-55 n. View Win. TR-55 Output 12/6/2020 TR-55 Update 4

Win. TR-55 Capabilities & Limitations n n n n n Maximum Area Watersheds Tc Reaches Reach Types Reach Routing Structure Types Structure Sizes 12/6/2020 TR-55 Update 25 square miles 1 -10 0. 1 hour <Tc < 10 hours 0 -10 Channel or Structure Muskingum-Cunge Storage-Indication Pipe or Weir 1 -3 5

Capabilities & Limitations n Rainfall Depth n Rainfall Distributions n Rainfall Duration n Dimensionless Unit Hydrograph n Antecedent Runoff Condition 12/6/2020 TR-55 Update Default or user-defined 0 -50 inches (0 -1, 270 mm) NRCS Type I/IA/II/III or user-defined 24 -hour Standard peak rate 484 or user-defined 2 (average) 6

Minimum Data Requirements n Single sub-area run data n Win. TR-55 Main Window l Project Identification Data u. User, Project, Subtitle, State & County l Sub-areas are expressed in: u. Acres or Square Miles l Dimensionless Unit Hydrograph l Rainfall Storm Data l Sub-area Data (Name, flows to reach/outlet, area, weighted curve number, & time of concentration) 12/6/2020 TR-55 Update 7

Win. TR-55 Sub-area/Reach Concepts n Watershed: system of sub-areas and reaches n Sub-areas: hydrograph-generating areas n Sub-areas flow into upstream end of stream reach 12/6/2020 TR-55 Update 8

Win. TR-55 Sub-area/Reach Concepts n Reaches - represent watershed stream flow paths n Reaches or Routing Elements - 2 types l Channel routing elements - Stream Reach l Storage routing elements - Reservoir/Structure Reach n “Outlet” -final reach (required for all watersheds) 12/6/2020 TR-55 Update 9

Watershed Example Su b- ar ea 1 Reach (stora ge rou 2 g) h c in t a u e R Ro h c a e (R ting) a e r a b- Su 2 Legend Storage Area Sub-Area Inflow Outlet 12/6/2020 1 TR-55 Update 10

Sub-area Data n Drainage Area n Runoff Curve Number (RCN) Data n Time of Concentration (Tc) Data n Channel Reach Data n Structure Reach Data n Design Storm Amounts and Distribution NOTE: RCN and Tc may be directly entered on Win. TR-55 Main Window 12/6/2020 TR-55 Update 11

Getting Started. Welcome to Win. TR-55 Window n Start Win. TR-55 “Return to Win. TR 55” n New user help n Skip welcome screen 12/6/2020 TR-55 Update 12

Win. TR-55 Main Window n Input basic project data n Menu n Buttons n Input boxes 12/6/2020 TR-55 Update 13

Help n n Display introduction Help for the Main Window System information Program version number and date 12/6/2020 TR-55 Update 14

Win. TR-55 Main Window n New project “File - New” 12/6/2020 TR-55 Update 15

Units n English or n Metric 12/6/2020 TR-55 Update 16

Main Window-Data Entry n Project Identification Data (User, Project, etc. ) n Choose area units l square mile or acres l square km or hectares n Select Dimensionless Unit Hydrograph n Input known project data in the “Sub-area Entry and Summary” n Tc & RCN - direct input 12/6/2020 TR-55 Update 17

Project Data n Project Data menu l l Land Use Details Time of Concentration Structure Data Reach Data n Buttons n Double-click title blocks in grid 12/6/2020 TR-55 Update 18

Land Use Details n Go to land use l right vertical scrollbar l Land Use Category radio button n Area in hydrologic soil column n Maximum 15 land uses per subarea 12/6/2020 TR-55 Update 19

Land Use Details n Weighted CN n Accumulated sub-area 12/6/2020 TR-55 Update 20

Land Use Summary n Convenient summary n Display current subarea n Summary toggle 12/6/2020 TR-55 Update 21

Custom Curve Number n Create Custom CN l Pervious curve number l % Impervious area unconnected 12/6/2020 TR-55 Update 22

Time of Concentration Details n Enter sub-area flow path segment data n 5 flow segments: 1 -sheet flow 2 -shallow concentrated 2 -channel flow n Displays total flow path length n Displays average flow velocity 12/6/2020 TR-55 Update 23

Reach Data Entry n Edit stream network n Channel reach or storage (structure) reach n Create channel reach rating table n Use another model (e. g. NRCS Win. TR-20) when: l > 10 reaches l complex channel or storage routing 12/6/2020 TR-55 Update 24

Reach Data Entry n Unique “Reach Name” (< 10 characters) n Downstream “Receiving Reach” n Channels - channel data n Structure l Enter structure name l Go to Structure Data Window (Double-click Name) 12/6/2020 TR-55 Update 25

Reach Data Plot n Graphical channel rating “Plot” n Line width & color”Options” 12/6/2020 TR-55 Update 26

View Reach Data n schematic “Reach Flow Path” n Detail toggle All Details Overview 12/6/2020 TR-55 Update 27

Structure Data Name Surface area Outlet type & size Structure name correspond to Reach Window name n 1 -3 sizes/trials n Complex ratings--use another model (e. g. Win. TR-20 or Sites) n n 12/6/2020 TR-55 Update 28

Global Data - Main Window n Storm Data-rainfall depths (how much did it rain? ) n Custom Rainfall Distributions(how was the rain distributed during the storm? ) n Dimensionless Unit Hydrograph-(What shape is the hydrograph? ) 12/6/2020 TR-55 Update 29

Storm Data n NRCS-supplied rainfall depths and distributions for the US states and counties n Edit rainfall depths n Design rainfall distribution n “Accept” to exit window n Changing State-County on Main Window doesn’t change Storm Data! n Set/edit Storm Data each run! 12/6/2020 TR-55 Update 30

Watersheds Outside US n “State” and “County” become “Region” and “Locale” n No NRCS-supplied rainfall data n Must enter rainfall depths and pick distribution 12/6/2020 TR-55 Update 31

Custom Rainfall Distributions n New distribution n Win. TR-55 Main Window “Global. Data” menu “Custom Rainfall Distribution” or “Custom Rainfall Distribution” button n Rename/delete distribution n Enter dimensionless distribution (increase from 0. 00000 to 1. 00000) n Displays time increment and number of points 12/6/2020 TR-55 Update 32

Rainfall Distributions Plot n “Plot” current rainfall distribution n One distribution plot (no comparisons) n Options for line width and color 12/6/2020 TR-55 Update 33

Dimensionless Unit Hydrographs n New dimensionless unit hydrograph n Rename/delete n Values increase from 0 -1, then decrease 1 -0 n Number of points displayed n Standard NRCS dimensionless unit hydrographs in Win. TR-55 may not be edited or deleted 12/6/2020 TR-55 Update 34

Dimensionless Unit Hydrograph Plot n “Plot” button on the Dimensionless Unit Hydrographs window n Options for line width and color n Single DUH (no multiple DUH plots) 12/6/2020 TR-55 Update 35

Run n ”Run” on the Win. TR-55 Main Window menu or “Run” button n Check storm(s) to evaluate n Click “Run” button n “Run” not available for incomplete data 12/6/2020 TR-55 Update 36

Viewing Output n File Display window opens after Win. TR-55 run n Also “Report View” n Various Win. TR-55 reports n Errors during run - “Error File” window opens n Error messages “View - Error File” 12/6/2020 TR-55 Update 37

Output Definition n Complete data for a run “Output Definition” button available (Win. TR-55 Main Window) n Check output report n Print to printer n View on-screen 12/6/2020 TR-55 Update 38

Possible Reports n n n n n Current data description Storm Data Watershed Peak Table Hydrograph Peak/Peak Time Table Structure Output Table Reach Summary Table Sub-Area Time of Concentration Details Sub-Area Land Use and Curve Number Details Reach Channel Rating Details Structure Rating Details 12/6/2020 TR-55 Update 39

Other Reports n File Display window (report viewer) n Input file n Win. TR-20 Printed Page file (tabular hydrograph) n Error file n Debug file 12/6/2020 TR-55 Update 40

Plotting and Viewing Hydrographs n Click Hydrographs button (Main Win. TR-55 Window) n Select Sub-areas or Reaches n Check desired subareas or desired reaches n Check storm event n Check alternatives n Reaches - upstream or downstream end 12/6/2020 TR-55 Update 41

Graphics Window n Click “Plot” on the Output Graphics window to plot selected hydrographs n Line width and color options n Print to printer or n Save bitmap image 12/6/2020 TR-55 Update 42

Summary n. Demonstrated Win. TR-55 n. Created Win. TR-55 Input File n. Ran Win. TR-55 n. Viewed Win. TR-55 Output 12/6/2020 TR-55 Update 43

Win. TR-55 Web Site n Download latest Win. TR-55 version http: //www. nrcs. usda. gov/wps/portal/nrcs/detailfull/national /home/? cid=stelprdb 1042901 l Update notes l Win. TR-55 User Manual 12/6/2020 TR-55 Update 44

Development Team n n n Claudia Hoeft Laurel Foreman William Merkel Helen Fox Moody Quan D. Quan Ralph Roberts John Mc. Clung Al Mc. Neill Jolyne Lee Don Woodward Jon Werner Roger Cronshey 12/6/2020 NRCS, Washington DC NRCS, Iowa NRCS-WNTSC, Maryland ARS, Maryland NRCS-NWMC, Arkansas NRCS, South Carolina NRCS-NWCC, Oregon NRCS-retired TR-55 Update 45

End 12/6/2020 TR-55 Update 46 USDA-NRCS