Project Title:
GIS Based Water Resources Management Decision Support System – Phase II
Thematic Area:
Watershed Management
Location:
* Rampatnam watershed in Kolar, Karnataka
* Gandheshwari subbasin in Bankura, West Bengal
* Bewas and Dudhi watersheds, Tawa Basin, Raisen District, MP
* Waikhulok and Awang Khujairok watersheds, Manipur
Objective:
* To develop and disseminate the stand alone water resources related watershed
management applications as desired by the end users
* To integrate the components already developed in the first phase i.e., the DBMS
and the hydrologic model along with the GIS interface into a Watershed
Management Decision Support System
(WMDSS)
* To implement the hydrologic model on the selected watersheds in Bankura and
Kolar districts and check the validity of the model.
* To disseminate the software to the end-users and obtain feedback
Abstract:
The major objective of the project was to validate the generic integrated watershed management tool for local level planning developed in the phase I. The distributed Hydrological model namely SWAT, with GIS pre and post processor, has been used for sustainable watershed development using the scenario generation capability of the model. The test was made on two pilot projects one at Kolar, Karnataka and the other at Bankura, West Bengal and many other Indian catchments of varied sizes.
This product helps the end-user in integrated watershed management approach, concentrating on water resources management aspects in a watershed, which comprises of many models to simulate the behaviour of major prevalent processes in the watershed. These models include flow-generating models, demand generating models and sediment Yield models
Data Used:
* Spatial data: DEM, Landuse, Soil layers, Weather station Location, Village and
district boundaries
* Non Spatial data: Daily rainfall, maximum minimum temperature,
RH, Solar Radiation, Soil and Crop related parameters, Socio economic data
Highlights/Findings:
The cutting edge distributed hydrological model with the ‘what if’ scenario capabilities for planners has been the focus of the project. This capability will help the planners in involving the community in a participatory way by making them understand the impact of man made decisions in a simulation mode before the actual implementation of such changes is made
Output:
* SWAT on pilot watersheds. Figure (
Figure1) shows the scenario generation
capability of SWAT model. The impact of change in Cropping Pattern (Rice to
Maize) on water yield has been depicted in the Gandheshwari watershed.
* GRAM - SWAT Interface (
Figure2).
* GIS based Water Resources Application – ArcView based application for automatic
watershed delineation, siting of check dam, relating watersheds with administrative
boundaries was developed. A sample output of the application is depicted in the
figures below.
Overlay Watershed boundary with administrative boundary
(
Figure3)
Multiple Check Dam Locations (
Figure4)
* Spatial District Resources Profile – a packaged set of geo-referenced data and
query tools for Bankura was put together. Few screen shots are shown in the
figures.
Map Layers - For Display (
Figure5)
Query: Find the entire place where annual precipitation is between 1350 mm to
1380 mm (
Figure6)
* Soil Series Database – An application to provide information on the kinds of soils
and their characteristics occurring in different parts of the country based on the
Bench mark Soil series of India, published by NBSSLUP was developed.
Soil Series Properties View Screen
(
Figure7)
Map Showing the Benchmark soil location
(
Figure8)
