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  1. Knowledge hub
  2. Evidence and research

Evidence and research

Northern Rangelands Sand Dam Programme - Project Overview (2015-2019)

Northern Rangelands Sand Dam Programme - Project Overview (2015-2019)

A review of Excellent's four-year pilot sand dam programme to increase access to clean water for both people and wildlife in the Northern Rangelands of Kenya. Read more

Published: 7th May, 2020

Updated: 16th June, 2020

Author: Dwain Lucktung

Related topics:
  • Evidence and research
External Evaluation on the DFID-funded programme 2013-2016

External Evaluation on the DFID-funded programme 2013-2016

This is the final evaluation of the three-year DFID-funded project that ended in October 2016 which set out to support 20 self-help groups (SHGs) in southeast Kenya to build 62 sand dams. Read more

Published: 5th July, 2018

Updated: 24th October, 2018

Author: Dwain Lucktung

Related topics:
  • Evidence and research
The potential for sand dams to increase the adaptive capacity of East African drylands to climate change

The potential for sand dams to increase the adaptive capacity of East African drylands to climate change

This paper addresses the analysis and comparison of vegetation at sand dam sites and control sites over selected periods of drought, using the normalised difference vegetation index (NDVI). The results show that vegetation biomass was consistently and significantly higher at sand dam sites during periods of extended droughts. It is also shown that vegetation at sand dam sites recovers more quickly from drought. Read more

Published: 5th July, 2018

Updated: 14th August, 2018

Author: Dwain Lucktung

Related topics:
  • Evidence and research
An Assessment of the Microbiological Water Quality of Sand Dams in Southeastern Kenya

An Assessment of the Microbiological Water Quality of Sand Dams in Southeastern Kenya

Water stored within sand dams is clean, and safe to drink! This is according to a 2018 paper written by Cranfield University Water and Science Institute. Read more

Published: 15th May, 2018

Updated: 14th August, 2018

Author:

Related topics:
  • Evidence and research
Sand dams: rainwater harvesting or groundwater recharge?

Sand dams: rainwater harvesting or groundwater recharge?

In this study, Cranfield University attempted to quantify the flows and understand the water balance of sand dams. Read more

Published: 14th May, 2018

Updated: 29th July, 2019

Author: Dwain Lucktung

Related topics:
  • Evidence and research
A summary of: An Assessment of the Microbiological Water Quality of Sand Dams in Southeastern Kenya

A summary of: An Assessment of the Microbiological Water Quality of Sand Dams in Southeastern Kenya

A brief summary by Cranfield University of the 2018 published paper. Read more

Published: 14th May, 2018

Updated: 29th July, 2019

Author: Dwain Lucktung

Related topics:
  • Evidence and research
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Showing 10 of 6

Latest

  • Excellent win 2020 iF Social Impact Prize!

    Excellent win 2020 iF Social Impact Prize!

    Excellent Development are awarded an International Forum Design GmbH (iF) Social Impact Prize for our sand dam project work in southeast Kenya.

  • Empower families to feed themselves

    Empower families to feed themselves

    We need your help so that we can continue to support more dryland communities to build sand dams and implement climate-smart farming, providing vital food and water supplies to vulnerable families.

  • £83,443 raised in Big Give Christmas Challenge 2020!

    £83,443 raised in Big Give Christmas Challenge 2020!

    In this year's Big Give Christmas Challenge you helped us raise over £80,000 to build two sand dams and implement a range of environmental protection measures in southern Zimbabwe.

  • Missing school and education due to COVID-19 and lack of water

    Missing school and education due to COVID-19 and lack of water

    Kasangi Simon, a 12-year-old pupil at Nzeluni Primary School, southeast Kenya, shares her experience coping with water shortage during the COVID-19 pandemic, and what difference a school water tank would make.

Most read

  • What is a sand dam?

    What is a sand dam?

  • 1 million sand dams for 0.5 billion people by 2040

    1 million sand dams for 0.5 billion people by 2040

    Read about our plan to directly support other organisations to build sand dams, in turn, realising our vision to support millions of the world’s poorest people by helping them to transform their own lives through water and soil conservation in drylands.

  • Donate

    Donate

    Please donate what you can to transform lives with sand dams and clean water.

  • Zimbabwe (Partner: Dabane Trust)

    Zimbabwe (Partner: Dabane Trust)

    Dabane Trust and Excellent are working together with rural communities in the semi-arid areas of Zimbabwe to develop simple, appropriate and sustainable water abstraction and food production systems.

  • Sand dam manual

    Sand dam manual

    For everything you need to know about building sand dams, click here to read (and download for free!), Sand Dams: A Practical & Technical Manual.

  • Watch how sand dams work

    Watch how sand dams work

    Film explaining how sand dams work and their potential impact in the world's drylands

  • The challenge

    The challenge

    Find out what are drylands, why they are they are such harsh regions to live, how sand dams are applicable in drylands and what difference they can make to over 40% of the world's land surface.

  • Job opportunities

  • September 2018 sand dam expedition with Barclays Isle of Man

    September 2018 sand dam expedition with Barclays Isle of Man

    Barclays Isle of Man volunteers and community members share highlights from the construction of a sand dam they worked together to build in southeast Kenya in September 2018.

  • Working together with Rotary

    Working together with Rotary

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Excellent Development, 7-14 Great Dover Street London, SE1 4YR, United Kingdom