Inflow to Okanagan Lake
The model's mean inflow from Mission Creek to Okanagan Lake over water years 1994 to 2024 is 200.95 GL per year (F80). A water year runs from 1 October to 30 September.
outputs/lake_budget_v2/OBWB_LakeBudgetWY-wmdem_v2_20261011.csv; F80. Download data (CSV)Uncertainty range
The range combines the uncertain parts of the budget: fan loss, withdrawals, reservoir operations, model structure and, for future periods, climate. It is a sensitivity range, not a statistical interval. The model-structure part rests on candidate models that were not adopted and only raises the inflow (F82).
196.7 to 237.4
GL per year
Range around today's 200.95, WY1994 to 2024
F82, Moderate confidence
215.7
GL per year [189.2 to 299.6]
SSP2-4.5, 2041 to 2070
F82
222.6
GL per year [185.4 to 301.9]
SSP5-8.5, 2071 to 2100
F82
outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv; F82. Download data (CSV)Not included in the range (F82)
- A spring gain below the gauge (F79).
- September flow to the Benvoulin diversion.
- Uncertainty in the climate forcing and in the calibrated parameters.
Confidence: Moderate; Low for carrying the operations and structure terms into the climate periods (F82).
Numbers on this page and their sources
| Number | Value | Result file | Decision log | Second check |
|---|---|---|---|---|
| Lake inflow ssp245 2041-2070 central (GL/yr) | 215.7 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | none |
| Lake inflow ssp245 2041-2070 high (GL/yr) | 299.6 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component highs |
| Lake inflow ssp245 2041-2070 low (GL/yr) | 189.2 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component lows |
| Lake inflow ssp585 2071-2100 central (GL/yr) | 222.6 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | none |
| Lake inflow ssp585 2071-2100 high (GL/yr) | 301.9 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component highs |
| Lake inflow ssp585 2071-2100 low (GL/yr) | 185.4 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component lows |
| Historical envelope high (GL/yr) | 237.4 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component highs |
| Historical envelope low (GL/yr) | 196.7 | outputs/lake_budget_v2/OBWB_LakeInflowEnvelope_v2_20261011.csv | F82 | central + component lows |
| Mean inflow to Okanagan Lake, WY1994-2024 (GL/yr) | 200.95 | outputs/lake_budget_v2/OBWB_LakeBudgetWY-wmdem_v2_20261011.csv | F80 | daily mm x area |