Adaptation of urban water supply infrastructure to impacts from climate and socioeconomic changes: The case of Hamilton, New Zealand

TY - JOUR

T1 - Adaptation of urban water supply infrastructure to impacts from climate and socioeconomic changes

T2 - The case of Hamilton, New Zealand

AU - Ruth, Matthias

AU - Bernier, Clark

AU - Jollands, Nigel

AU - Golubiewski, Nancy

PY - 2007/6

Y1 - 2007/6

N2 - While the relations between climate variables and sectoral water demand have been well established in the literature, few studies have attempted to quantify changes in urban water usage with climate change. Concentrating on the city of Hamilton, New Zealand, we investigate possible water use and infrastructure needs for a range of climate and population projections. We find that water demand (at the monthly aggregate level) is largely driven by changes in population, and not significantly affected by changes in climate. However, as population increases, the effect of climate variables on per capita consumption will be magnified. Monthly aggregate changes may further mask potenially significant short-term shortages. In several scenarios, water supply shortages in 2030 occur with a 30-40% probability, suggesting needs for long-term capacity expansion or aggressive demand side management, rather than implementation of short-term management of water demand.

AB - While the relations between climate variables and sectoral water demand have been well established in the literature, few studies have attempted to quantify changes in urban water usage with climate change. Concentrating on the city of Hamilton, New Zealand, we investigate possible water use and infrastructure needs for a range of climate and population projections. We find that water demand (at the monthly aggregate level) is largely driven by changes in population, and not significantly affected by changes in climate. However, as population increases, the effect of climate variables on per capita consumption will be magnified. Monthly aggregate changes may further mask potenially significant short-term shortages. In several scenarios, water supply shortages in 2030 occur with a 30-40% probability, suggesting needs for long-term capacity expansion or aggressive demand side management, rather than implementation of short-term management of water demand.

KW - Climate adaptation

KW - Infrastructure

KW - Regional climate impact

KW - Urban water demand

KW - Urban water supply

UR - http://www.scopus.com/inward/record.url?scp=34248167079&partnerID=8YFLogxK

U2 - 10.1007/s11269-006-9071-x

DO - 10.1007/s11269-006-9071-x

M3 - Article

AN - SCOPUS:34248167079

SN - 0920-4741

VL - 21

SP - 1031

EP - 1045

JO - Water resources management

JF - Water resources management

IS - 6

ER -