Runoff Depth and Direct Hydrograph Calculation

Slide Note

Calculate runoff depth and direct hydrographs for a watershed with specific land use and soil groups, inputting rainfall data and watershed characteristics. Determine SCS unit hydrograph and rainfall excess hyetograph. Explore kinematic wave overland flow and distributed hydrologic modeling.

nyx_138 Follow

Uploaded on Apr 16, 2025 | 0 Views

Download Presentation

Please find below an Image/Link to download the presentation.

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.

You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.

Download Presentation

The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.

E N D

Presentation Transcript

SCS Dimensionless Unit Hydrograph See tabulated values in Mays Table 8.8.1 From Mays, 2011, Ground and Surface Water Hydrology

Example A watershed has 40% residential (1/4 ac lots), 25% open space (good condition), 20% commercial and business (85% impervious) and 15% industrial (72% impervious) with corresponding soil groups of C, D, C and D. What is the depth of runoff from 6 in of rain Assume the rainfall occurs in a pattern of 2 in in first hour, 3 in in second hour and 1 in in third hour determine the rainfall excess hyetograph Average slope is 3%, Area is 3 mi2, hydraulic length is 1.2 mi. Determine the SCS unit hydrograph. What is the direct runoff hydrograph from the rain used earlier