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Rock Creek near Goldendale Rock Creek nr. Roosevelt Alder Creek at Alderdale Fourmile Canyon near Plymouth East Branch Glade Creek Tributary near Prosser East Branch Glade Creek near Prosser Dead Canyon Tributary near Alderdale Alder Creek near Bickleton Bofer Canyon Tributary near Kennewick Key: Continuous Stream flow Records Peak Flow Records Only 1980 1990 2000 1910 1920 1930 1940 1950 1960 1970 Warm/Dry PDO Warm/ Dry PDO Cool/Wet PDO Cool/ Wet PDO Data Availability for the USGS Stream Flow Stations in WRIA 31 Figure 3-2 V:\030009 WRIA 31\Final Level 1\Figure 3-2.xls ---PAGE BREAK--- 0 10 20 30 40 50 60 70 80 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Discharge (cfs) 50% Exceedance Flow 90% Exceedance Flow Rock Creek near Roosevelt (#14036600) Data from Water Year 1963-1968 0 1 2 3 4 5 6 7 8 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Discharge (cfs) 50% Exceedance Flow 90% Exceedance Flow Alder Creek at Alderdale (#14034350) Data from Water Year 1963-1968 Exceedance Flows for USGS Stations at Rock and Alder Creeks Figure 3-3 V:\030009 WRIA 31\Final Level 1\Figure 3-3.xls ---PAGE BREAK--- 0.1 1 10 100 1000 10000 Mean Daily Discharge in cfs Rock Creek near Roosevelt 1963 1967 1966 1965 1964 1968 0.1 1 10 100 1000 10000 Mean Daily Discharge in cfs Alder Creek at Alderdale 1963 1967 1966 1965 1964 1968 Hydrographs for Rock and Alder Creeks Figure 3-4 Note: Gage is immediately of perennial spring (refer to text). V:\030009 WRIA 31\Final Level 1\Figure 3-4.xls ---PAGE BREAK--- V:\030009 WRIA 31\Final Level 1\Figure 3-5.xls Unit Area Runoff at Rock and Alder Creeks 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Unit Area Runoff in cfs/mi2 Rock Creek near Roosevelt (#14036600) Alder Creek at Alderdale (#14034350) Figure 3-5 ---PAGE BREAK--- Mean Daily Flows for McNary and John Day Dams and the Columbia River at Pasco Figure 3-6 0 50 100 150 200 250 300 350 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Discharge (kcfs) McNary Dam John Day Dam 0 100 200 300 400 500 600 Oct-64 Jan-65 Apr-65 Jul-65 Oct-65 Jan-66 Apr-66 Jul-66 Oct-66 Discharge (kcfs) Columbia River at Pasco Columbia River at McNary Dam V:\030009 WRIA 31\Final Level 1\Figures 3-6_3-8_3-9.xls/Fig 3-6 ---PAGE BREAK--- Exceedance Flows and Minimum Instream Flow Requirements for McNary and John Day Dams Figure 3-7 0 50 100 150 200 250 300 350 Oct Nov Dec Jan Feb Mar Apr 1- 15 Apr 16-25 Apr 26-30 May Jun 1- 15 Jun 16-30 Jul 1- 15 Jul 16- 31 Aug Sep Discharge (kcfs) 50 % Exceedence 90 % Exceedence Minimum Instream Flow (Avg. Weekly) 0 50 100 150 200 250 300 350 Oct Nov Dec Jan Feb Mar Apr 1- 15 Apr 16-25 Apr 26-30 May Jun 1- 15 Jun 16-30 Jul 1- 15 Jul 16- 31 Aug Sep Discharge (kcfs) 50% Exceedence 90% Exceedence Minimum Instream Flow (Avg. Weekly) McNary Dam John Day Dam V:\030009 WRIA 31\Final Level 1\Figure 3-7.xls/Fig 3-7 ---PAGE BREAK--- Mean Weekly Flows (1998-2003) and Minimum Instream Flow Requirements for McNary and John Day Dams Figure 3-8 0 50 100 150 200 250 300 350 400 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00 Apr-00 Jul-00 Oct-00 Jan-01 Apr-01 Jul-01 Oct-01 Jan-02 Apr-02 Jul-02 Oct-02 Jan-03 Apr-03 Jul-03 Discharge (kcfs) Mean Weekly Discharge Minimum Avg. Weekly Flow Requirement John Day Dam 0 50 100 150 200 250 300 350 400 Oct-98 Jan-99 Apr-99 Jul-99 Oct-99 Jan-00 Apr-00 Jul-00 Oct-00 Jan-01 Apr-01 Jul-01 Oct-01 Jan-02 Apr-02 Jul-02 Oct-02 Jan-03 Apr-03 Jul-03 Discharge (kcfs) Mean Weekly Discharge Minimum Avg. Weekly Flow Requirement McNary Dam V:\030009 WRIA 31\Final Level 1\Figures 3-6_3-8_3-9.xls\Fig 3-8 ---PAGE BREAK--- Mean Daily Flows on the Yakima River Near WRIA 31, 1971-2002 Figure 3-9 0 1000 2000 3000 4000 5000 6000 7000 8000 Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Discharge (cfs) Yakima River at Mabton Yakima River at Kiona V:\030009 WRIA 31\Final Level 1\Figures 3-6_3-8_3-9.xls