Eastern Nile Technical Regional Office

Theme
Wetlands
Goals
Climate Change
Ownerships
ENTRO Document

Files in this item

CCE Machar Marshes Eco-Hydrology Assessment Project Draft Technical Report

Authors
HYDROC Gmbh
Date Of Publication
Accessibility status
Open Access
Language
English
Type
Thematic Report
Abstract

Report of the Water Resource Analysis carried out under the Machar Marshes Eco-Hydrology Assessment Project supported by the German GIZ. It is a parallel study to the economic valuation study of ecosystem services and biodiversity of the Machar Marshes, and carried out in 4 phases: (1) Desk Study; (2) Baseline Assessment; (3) Water Resource Analysis (this Report) and (4) Workshops and Capacity Building Training. It collects all available datasets, data used in previous modelling efforts (e.g., BAS MSWRDM), and historic data and reports on water resource assessments to set up and run a hydrological simulation model to evaluate future development options and scenarios. The main findings are: (1) The MIKE 11 model has been dynamically linked to the MIKE SHE Model, so that the implemented MIKE SHE modelling framework can be integrated with the existing White Nile Equatorial Mike HYDRO DSS model, as a ‘proof of concept’; (2) the Machar Marshes have three mainland covers: permanent wetlands with deep water bodies, seasonal floodplains inundated by river spills and rainfall, and dry fringes (which include seepage wetlands); (3) each vegetation type has clear niche preferences in terms of flooding depth, duration, and timing, as well as timing and severity of flows during the dry season; (4) The hydraulic and hydrological niche preferences (outlined in detail by Sutcliffe in 2009 and modified for use here) and responses provide a direct link to water depth distribution across the floodplain via the hydraulic model outputs and can therefore be used to assess flow scenarios and their influence on wetland habitats and overall biodiversity; (5) Once calibration is achieved, the hydrological time series from the hydraulic model will be used to produce an output according to vegetation indicator preferences; and (6) the baseline model developed in Phase 2 (Baseline Assessment), and extended with the SSEA, will be used to evaluate the impact of six scenarios defined in the BAS-MWRD project on the Machar Marshes, and ecological responses described and quantified for scenarios relevant to the Machar Marshes. It concludes by recommending that, for cost-effectiveness and to generate useful data for monitoring and management of the wetlands, the bulk of the monitoring should be at the whole wetland scale and make use of satellite data as far as possible.

Similar Documents

Ground Water Project Report

Authors
Dr. Maha Abdulwahab
Dr. Modathir
Date Of Publication
06 Oct 2022
Accessibility status
Open Access
Language
English
Document Types
Thematic Report
Type
Technical Report

Guidelines for Financing Transboundary Investments through Country Programming

Authors
Mr. Daniel Malzbender
Date Of Publication
01 Apr 2022
Accessibility status
Open Access
Language
English (United States)
Document Types
Thematic Report
Type
Thematic Report

Mapping of Investment Projects of River Basin Organizations (RBOs) and Regional Economic Communities (RECs) that Contribute to the Emerging Nile Basin Investment Agenda

Authors
Dr. Nicolas Azza
Date Of Publication
01 Mar 2022
Accessibility status
Open Access
Language
English (United States)
Document Types
Thematic Report
Type
Technical Report

Analysis of NBI experiences with investment project development

Authors
Mr. Daniel Malzbender
Date Of Publication
01 Mar 2022
Accessibility status
Open Access
Language
English
Document Types
Thematic Report

State of the River Nile Basin

Authors
Dr. Malte, Dr. Michael, Mr. Tom Waako, Dr. Azza, Dr. Modathir
Date Of Publication
01 Jan 2021
Accessibility status
Open Access
Language
English
Document Types
Thematic Report