Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Suitability of Water Harvesting in the Upper Blue Nile Basin, Ethiopia: A First Step towards a Meso-scale Hydrological Modeling Framework
Stockholm University, Stockholm Environment Institute.
Stockholm University, Faculty of Science, Stockholm Resilience Centre.
Stockholm University, Stockholm Environment Institute.
2014 (English)Manuscript (preprint) (Other academic)
Place, publisher, year, edition, pages
2014. , 24 p.
National Category
Environmental Management
Research subject
Natural Resources Management
Identifiers
URN: urn:nbn:se:su:diva-102874OAI: oai:DiVA.org:su-102874DiVA: diva2:713722
Available from: 2014-04-24 Created: 2014-04-24 Last updated: 2014-09-30
In thesis
1. Intensifying Agricultural Water Management in the Tropics: A cause of water shortage or a source of resilience?
Open this publication in new window or tab >>Intensifying Agricultural Water Management in the Tropics: A cause of water shortage or a source of resilience?
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Frequent climatic shocks have presented challenges for rainfed agriculture in sub-Saharan Africa. Appropriate water management practices are among the solutions to the challenges. The role of water harvesting in achieving sustainable agricultural intensification and specified resilience was explored. Suitable areas for water harvesting in the Upper Blue Nile basin were identified. The usefulness of the Curve Number method for surface runoff estimation was evaluated, and was found to perform satisfactorily. The impact of climate change in the Lake Tana sub-basin was studied. A decision support system was developed for locating and sizing of water harvesting ponds in the SWAT model. Methodological developments enabled analysis of the implications of water harvesting intensification in a meso-scale watershed in the Lake Tana sub-basin.

Results suggest that water harvesting can increase agricultural productivity, sustain ecosystems and build specified resilience, and thereby contribute to sustainable agricultural intensification. There is considerable potential for water harvesting in the Upper Blue Nile Basin. Rainfall may increase in the Lake Tana sub-basin due to climate change. Supplementary irrigation from water harvesting ponds and better nutrient application increased staple crop production by up to three-fold. Moreover, a substantial amount of cash crop was produced using dry seasonal irrigation. Water harvesting altered the streamflow regime, and reduced sediment loss from the watershed.      

Water harvesting can play an important role in food security. It showed potential to buffer climatic variability. In the watershed studied, water harvesting will not compromise the environmental water requirements. Instead, increased low flows, and reduced flooding and sediment loss may benefit the social-ecological systems. The adverse effects of disturbance of the natural flow variability and sediment influx to certain riverine ecosystems warrant detailed investigation.

Place, publisher, year, edition, pages
Stockholm: Stockholm Resilience Centre, Stockholm University, 2014. 67 p.
Keyword
Water harvesting, Climate change, Climate variability, Multi criteria evaluation, SWAT, CN, sub-Saharan Africa, Upper Blue Nile, Lake Tana basin
National Category
Oceanography, Hydrology, Water Resources
Research subject
Natural Resources Management
Identifiers
urn:nbn:se:su:diva-102878 (URN)978-91-7447-914-0 (ISBN)
Public defence
2014-06-04, De Geersalen, Geovetenskapens hus, Svante Arrhenius väg 14, Stockholm, 10:00 (English)
Opponent
Supervisors
Projects
Water resources management and social-ecological resilience
Funder
Formas
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Manuscript. Paper 5: Epub ahead of print. Paper 6: Manuscript.

Available from: 2014-05-13 Created: 2014-04-24 Last updated: 2014-09-30Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Dile, Yihun TaddeleRockström, JohanKarlberg, Louise
By organisation
Stockholm Environment InstituteStockholm Resilience Centre
Environmental Management

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 110 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf