water supply and demand in the okanagan and similkameen river basins brian guy, ph.d., p.geo....
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Water Supply and Demand in the Okanagan and Similkameen River Basins
Brian Guy, Ph.D., P.Geo.National Practice Leader, Environmental ScienceSeptember 2015
Okanagan location
From Natural Resources Canada
(2008)
Phase 2 Study Components
Water Supply Water Demand
Basin-wide water balance
Okanagan Lake water balanceHalf the net inflow evaporates
Okanagan Basin Hydrology Modelan Integrated Hydrological Modelling System that covers all land-based phases of the hydrologic cycle
Okanagan Water Demand Model:Cadastre, Soil, Climate and Land Use Polygons
1. Microsprinkler on peaches
2. Microsprinkler on cherries
3. Microsprinkler on pears
4. Drip on pears
5. Residential
6. Bee hives
1
2
3
4
5 6
Cadastre
Polygon
Water Use
Phase 2 Recommendations
More monitoringMore researchMore scenariosWork to make the Phase 2 models more accessible
This is the “Blank+Dots Blue” layout.
Use it for impact text, callout quotes,
and photos with defined borders,
or as a bold contrast from apredominantly white slide deck.
Historical Average of projections of 10 GCMs
Expected Streamflow in 2080 -Okanagan River at Oliver
Recreated from Hamlet et al. (2010)
Winter runoff increase
Spring runoff decrease
2080
sS
trea
mfl
ow
(d
am3)
50000
70000
90000
110000
130000
150000
170000
190000
210000
230000
250000
oct nov dec jan feb mar apr may jun jul aug sep
Lower summer flows (with longer
duration)
Projected monthly streamflow in 2080
2000 2005 2010 2015 2020 2025 2030 20350
50
100
150
200
250
300
Year
Po
pu
lati
on
(th
ou
san
ds)
Growth projections - Central Okanagan36% increase 2012 to 2035
Source: BC Stats 2012
Historic and Predicted Annual Evaporation from Okanagan Lake
Infill
Build-out with
landscaping
Future Okanagan Basin Outdoor Domestic Water Use
Projected annual water use 2011-2040
(entire Okanagan) under 6 scenarios: 2011 - 2040
Hydrologic Connectivity Model (2012)
OWAT – Okanagan Water Allocation Tool
ORGANIZATIONAL CHART – OWAT PLAN CONCEPTUAL PROJECT TIMELINE Establish Instream Flow Needs Develop MFLNRO Licence Evaluation Criteria Groundwater – Surface Water Linkages Assessment Develop Water Licence/Demand/Use Database OCHM Modification – New WEAP-Based Model State of the Basin Assessment Supply and Demand Uncertainty Analysis Groundwater Aquifer System Characterization Development of the OWAT Develop OWAT User Interface
Flow of Similkameen River at Princeton
Similkameen River at Princeton (WSC 08NL007)
Current Supply and Demand IssuesMonitoring networks
Environmental Flow NeedsGroundwaterFlooding (floodplains, stormwater systems)DroughtSource ProtectionWater storageInvasive musselsFN/provincial water management