Ministry of Environment
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Report: Inventory of Streamflow in the Thompson Okanagan Region

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This report covers the Thompson Okanagan region, defined as a provincial Natural Resource Operations region, and presents summary data and datasheets, revised and updated from the original report- Streamflow in the Southern Interior Region, December 1998 by W. Obedkoff, P.Eng., Resources Inventory Branch, Ministry of Sustainable Resource Management.

Author:  Ashfaque Ahmed, P.Eng.
Date Published:  Mar 2020
Report ID:  58628
Audience:  Government and Public
This report covers the Thompson Okanagan region, defined as a provincial Natural Resource Operations region, and presents summary data and datasheets, revised and updated since the 1998 BCSI report (Obedkoff, 1998). The 1998 BCSI report considered data from 1960 to 1995 with a 30-year normal period of 1961 to 1990. The current report includes updated data, a new 30-year normal period of 1981-2010 and additional calculations of flow duration, average year flow (average of annual mean flow for full record period) and standard deviations for all streamflow characteristics. The standard discharge data used are published by the Water Survey of Canada (WSC). The datasheets present various hydrologic characteristics that can be used directly in water resource applications and studies. Regional streamflow data are summarized in tabular form. Table 2 provides a summary of annual discharges, monthly distributions and streamflow characteristic frequency ratios, including the annual flow 10-year high- and low-year frequency ratios. Table 3 lists the regional streamflow characteristics with the number of years of data used in the analysis. Tables 4, 5, 6, 7 and 8 list the results of frequency analyses of instantaneous peak flows, annual mean flows, June to September 7-day low flows, and annual 7-day low flows, respectively.
Report Type
  Surface Water
 
Subject
  Region - Thompson-Nicola
  Region - Okanagan
  Water Information - Flood Protection - Emergency Planning and Response
  Water Information - Hydrometric / Hydrology
  Water Information - Water Management
  Water Information - Watershed Assessment Studies
  Water Information - Water Supply
 


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