Next Article in Journal
The Synergic Characteristics of Surface Water Pollution and Sediment Pollution with Heavy Metals in the Haihe River Basin, Northern China
Previous Article in Journal
Modified Principal Component Analysis for Identifying Key Environmental Indicators and Application to a Large-Scale Tidal Flat Reclamation
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Water 2018, 10(1), 71; https://doi.org/10.3390/w10010071

Effect of Climate Change on Reliability of Rainwater Harvesting Systems for Kabarole District, Uganda

1
School of Agriculture and Environmental Sciences, Mountains of the Moon University, Fort Portal P.O. Box 837, Uganda
2
Chemical Engineering Department, ProcESS division, KU Leuven, Box 2424, 3001 Heverlee, Leuven, Belgium
3
National Water and Sewerage Corporation, Kampala P.O. Box 7053, Uganda
4
Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria, Private 0183, South Africa
*
Author to whom correspondence should be addressed.
Received: 28 November 2017 / Revised: 8 January 2018 / Accepted: 10 January 2018 / Published: 15 January 2018

Abstract

This paper assesses the effect of climate change on reliability of rainwater harvesting systems for Kabarole district, Uganda, as predicted by 6 best performing global circulation models (GCMs). A daily water balance model was used to simulate the performance of a rainwater harvesting system using historical daily rainfall data for 20 years. The GCMs used to generate daily rainfall projections for 2025–2055 and 2060–2090 periods included; ACCESS1-0, BCC-CSM-1-M, CNRM-CM5, HADGEM2-CC, HADGEM2-ES and MIROC5. Analysis was based on the Ugandan weather seasons which included March, April, May (MAM) and September, October, November (SON) rain seasons in addition to December, January, February (DJF) and June, July, August (JJA) dry seasons. While an increase in reliability is predicted for the SON season, the worst-case scenario is projected during the MAM season with a reliability reduction of over 40% for the 2055–2090 period. This corresponds to a 27% reduction in water security for the same period. The DJF season is also expected to experience reduced water security by 1–8% for 2025–2055 and 2060–2090 with a 0.5 m3 tank size. Therefore, some form of extra harvesting surface and increased tank size will be required to maintain 80% systems reliability considering climate change. View Full-Text
Keywords: domestic rainwater harvesting; climate change; reliability; Kabarole; Uganda domestic rainwater harvesting; climate change; reliability; Kabarole; Uganda
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Kisakye, V.; Akurut, M.; Van der Bruggen, B. Effect of Climate Change on Reliability of Rainwater Harvesting Systems for Kabarole District, Uganda. Water 2018, 10, 71.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top