Basic Hydrology QGIS Edition

Описание: ***2025 Update - NRCS has created a tool to download data from Web Soil survey and convert it to a format that QGIS can understand (Geopackage). See this video from NRCS:    • How to Use SSURGO Portal Beta  

Soil and water district technicians will learn how to model small watersheds for conservation and stormwater management structures. Three hydrological models are presented: EFH2, TR-20/TR-55, and the rational method. A blend of GIS and by-hand analysis methods are shown. EFH2 software is presented for rural problems while HydroCAD is used for urban projects. The course culminates in a design example to allow students to implement what they've learned.
Link to Course Materials:
https://apps.agriculture.ny.gov/SoilW...
Contents:
00:00 – Introduction
12:14 – Drainage Area Mapping
18:33 – Drainage Areas in QGIS
22:38 – Getting Lidar in New York State
26:40 – Lidar Contours in QGIS
30:16 – Curve Numbers (CN Values)
36:47 – Hydrologic Soil Groups in QGIS
51:43 – Curve Number Mapping in QGIS
1:03:46 – Time of Concentration (Rural)
1:08:39 – Rural Tc in QGIS
1:16:48 – Time of Concentration (Urban)
1:25:38 – EFH2
1:33:43 – HydroCAD
1:45:52 – HydroCAD using the Rational Method
1:53:14 – Rural Design Problem in ArcMap
Course Developed by Tim Clark, PE.
Check out the Conservation Wiki: https://apps.agriculture.ny.gov/SoilW...