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Hydrographs can be input directly, and then routed down stream, using the different routing options. To do this, select the ''Direct Input * [[WMS:TR-20|TR20 Overview]]

:''L'' = length along the stream from the study point to the upstream limits of the basin in miles. ...sub>'' = length along the stream from the study point to a point along the stream adjacent to the centroid of the basin in miles.

...tation Arcs|'''Node→Flow Arcs''']] and [[WMS:Time Computation Arcs|'''Stream→Flow Arcs''']] commands. ..., or combine arcs between outlet points to compute the travel time along a stream reach.

Data can also be formatted in a [[2D Scatter Point Files|scatter point file]], o ...(but it is okay if they are). This also removes the necessity of creating stream in the TIN. This flexibility provides the opportunity to incorporate water

...cultural watersheds. It was derived by examining the required time for the stream to rise from low to maximum stage during a storm. The time of concentration ...asin Data Equations|Computing Lag Time or Time of Concentration from Basin Data]]

...tures (such as detention basins) can be defined from the ''TR-20 Reservoir Data'' dialog. ...lect the reservoir and select the '''OK''' button on the ''TR-20 Reservoir data'' dialog.

;4.2.a. Basin Data Equations :[[WMS:Overview of Basin Data Equations|Overview of Basin Data Equations]]

:''L_f'' = stream length in feet. :''S_f'' = stream slope in feet per foot.

...is fully coupled with hydraulic stream flow/routing models. Parameters for stream channels are defined using arcs and then mapped to the appropriate underlyi ...SSHA to model basins in both arid and humid environments."<ref name="GSSHA overview"/>

[[File:TR20routingdata.png|thumb|400 px|Example of the ''TR-20 Routing Data'' dialog.]] ...ns are generated automatically when writing a TR-20 file. However, routing data must be entered in order to simulate the movement of a flood wave through t

There are three basic ways to create stage data for floodplain delineation. The [[WMS:WMS Tutorials|tutorial]] on floodplai ==Hydraulic Model Data==

:[[WMS:GSSHA Join SSURGO Data|GSSHA Join SSURGO Data]] :[[WMS:GSSHA Solution Data|GSSHA Solution Data]]

...of further DEM elevation processing, including raster smoothing, basin and stream delineation and ordering, and development of other watershed parameters. If ==Computing Flow Data with TOPAZ==

[[File:HY8 Layout.png|thumb|600 px|Overview of the HY-8 layout]] The main HY-8 window has many sections and areas to give quick access to data and tools.

...o icons used on the [[WMS:Macros|Macro]] toolbar, Modules toolbar, and Get Data toolbar. File:WMS TerrainIcon.svg|Terrain Data Module

:[[WMS:Where Can I Get Data?|Where Can I Get Data?]] :[[WMS:Project Explorer Overview|Project Explorer Overview]]

:[[WMS:Where Can I Get Data?|Where Can I Get Data?]] :[[WMS:Project Explorer Overview|Project Explorer Overview]]

...file as a scatter dataset (see [[WMS:Preparing Stage Data|preparing stage data]] for more help). A smooth water surface is constructed by interpolating wa ...ng Stage Data|Prepare the water surface elevation data]]. Water elevations data consists of a series of surface water elevations points defined as x, y, z

:[[WMS:Where Can I Get Data?|Where Can I Get Data?]] :[[WMS:Project Explorer Overview|Project Explorer Overview]]

:[[WMS:Where Can I Get Data?|Where Can I Get Data?]] :[[WMS:Project Explorer Overview|Project Explorer Overview]]