Green Water Credits Mechanism to support sustainable water use in Africa
Project: Green Water Credits mechanism to support sustainable water use in Africa.Client: IFAD and SDC
Partners: ISRIC Wageningen
Period: 2006-2007
Aim: The aim of the project is threefold;
(A)to create a framework for selection of river basins suitable for the Green Water Credit mechanism,
(B) to select models that can support Green Water Credit initiatives and
(C)to make a first step for quantification of benefits in a suitable river basin.
Summary
Green Water Credits (GWC) is a mechanism for transfer of cash or other benefit to rural people in return for water management activities that determine the supply of green and blue water at source. These activities are presently unrecognized and un-rewarded. Appropriate water management with focus on upstream and downstream interactions is one of the main challenges.
In Tana basin two green water management measures were determined from the hydrological computer model SWAT:- 1. Enhance water productivity: results in a substantial increase of the total crop transpiration, at the same time,
total water consumption by evapotranspiration increases only slightly.
2. Reduce soil erosion: a clear win-win situation where less silt will flow into the reservoirs while simultaneous less fertile soil will be lost.
Details
Reports
Hunink, J.E., W.W. Immerzeel, P. Droogers, 2009. Green Water Credits for the Upper Tana Basin, Kenya. Phase II - Pilot Operations: Biophysical assessment using SWAT. Report FutureWater: 84Droogers P., Kauffman, J.H., Dijkshoorn, J.A., Immerzeel, W., Huting, J.R.M., 2006. Green Water Credits: Basin identification. Green Water Credits report 1. ISRIC report 2006/04. ISRIC, Wageningen
Droogers, P., S. Mantel and J.H. Kauffman. 2006. River basin models to support Green Water Credit assessment. Green Water Credits report 2. FutureWater Report 53.
Droogers, P., J.H. Kauffman, W.W. Immerzeel. 2006. Green and blue water services in Tana river basin, Kenya, exploring options using an intergrated modeling framework. Green Water Credits Report 3. FutureWater Report 54.
Links
ISRIC World Soil Information IFAD International Fund for Agricultural DevelopmentPlease feel free to contact the Project Leader of this project for more information.