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Historic 2020s 2050s 2080s

50 100 150 200 250 Annual flow (m3x106)

Trout Creek supply/demand CGCM2-B2

Historic 2020s 2050s 2080s

50 100 150 200 250 Annual flow (m3x106)

Figure 3.7. Annual crop water demand and water supply for Trout Creek, Okanagan region, Canada, modelled for 1961 to 1990 (historic) and three 30-year time slices in the future. Each dot represents one year. Drought supply threshold is represented by the vertical line, maximum observed demand is shown as the horizontal line (Neilsen et al., 2004).

Table 3.3. Relative costs per unit of water saved or supplied in the Okanagan region, British Columbia (adapted from MacNeil, 2004).

Adaptation option

Application

Relative unit cost

Water saved or supplied in % of the current supply

Irrigation scheduling

Large holdings to small holdings

1.0 to 1.7

10%

Public education

Large and medium communities

0 0

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