On January 12, 2016, FPAC met via conference call for its weekly meeting. The following people participated in the meeting:

Similar documents
FISH PASSAGE CENTER. On January 8, 2019, FPAC met for its weekly conference call. The following people participated in the call:

FISH PASSAGE CENTER. On December 4, 2018, FPAC met for its weekly conference call. The following people participated in the call:

FISH PASSAGE CENTER AGENDA ITEMS

FISH PASSAGE CENTER. On February 12, 2019, FPAC met for its weekly conference call. The following people participated in the call:

On January 23, 2018, FPAC met via conference call for its weekly meeting. The following people participated in the meeting:

FISH PASSAGE CENTER. On December 18, 2018, FPAC met for its monthly face-to-face meeting. The following people participated in the meeting:

FISH PASSAGE CENTER AGENDA ITEMS

On April 3, 2018, FPAC met via conference call for its weekly meeting. The following people participated in the meeting:

On April 4, 2017, FPAC met via conference call for its weekly meeting. The following people participated in the meeting:

February 27, Jim Ruff, Manager, Mainstem Passage and River Operations. March 2008 Runoff Forecast and Power Supply Status

On January 16, 2018, FPAC met for at the Fish Passage Center for its monthly face-to-face meeting. The following people participated in the meeting:

ACCUMULATED PRECIPITATION IN INCHES

ACCUMULATED PRECIPITATION IN INCHES

ACCUMULATED PRECIPITATION IN INCHES

ACCUMULATED PRECIPITATION IN INCHES

On May 29, 2018, FPAC met via conference call for its weekly meeting. The following people participated in the meeting:

On August 14, 2018, FPAC met for its weekly conference call. The following people participated in the meeting:

ACCUMULATED PRECIPITATION IN INCHES

Winter Climate Forecast

Winter Climate Forecast

COLUMBIA RIVER TECHNICAL MANAGEMENT TEAM March 8, 2017 DRAFT Facilitator s Summary Facilitator: Emily Stranz; Notes: Charles Wiggins, DS Consulting

COLUMBIA RIVER TECHNICAL MANAGEMENT TEAM March 28, 2018 Facilitator s Summary Facilitator: Donna Silverberg; Notes: Nancy Pionk, DS Consulting

COLUMBIA RIVER TECHNICAL MANAGEMENT TEAM February 1, 2017 Facilitator s Summary Facilitator: Emily Stranz; Notes: Charles Wiggins, DS Consulting

II. HYDROMETEOROLOGY. OBSERVATIONS: Weather Snowpack SWSI Streamflow Flood Events FORECASTS: Runoff Volume Long Range Peaks Daily Streamflows

847 NE 19 th Avenue, #250, Portland, OR Phone: (503) Fax: (503) us at

Modeling of peak inflow dates for a snowmelt dominated basin Evan Heisman. CVEN 6833: Advanced Data Analysis Fall 2012 Prof. Balaji Rajagopalan

2016 Water Management Plan Seasonal Update March 14, Introduction


Water Outlook for Recap of 2017 winter & runoff season and amount needed in 2018 for adequate irrigation supplies. May 19, 2017 Teton Valley

2012 Water Management Plan Seasonal Update October 31, Introduction

2016 Water Management Plan Seasonal Update November 8, Introduction

APR-SEP. Forecast Are in KAF % Average 10 % 30 Year. Forecast Period

Kootenai Basin Water Supply Update and Sturgeon Flow Augmentation Kootenai Valley Resource Initiative

2017 Water Management Plan Seasonal Update March 1, Introduction

BOR : John Roache / Mary Mellema / Pat McGrane BPA : Tony Norris / Scott Bettin / Robyn MacKay

National Weather Service. Harold H. Opitz Hydrologist in Charge

Albeni Falls Operations Meeting 2015

HyMet Company. Streamflow and Energy Generation Forecasting Model Columbia River Basin

Missouri River Basin Water Management

Evapo-transpiration Losses Produced by Irrigation in the Snake River Basin, Idaho

Oregon Water Conditions Report May 1, 2017

Oregon Water Conditions Report April 17, 2017

PRELIMINARY DRAFT FOR DISCUSSION PURPOSES

Missouri River Basin Water Management Monthly Update

Missouri River Basin Water Management Monthly Update

Missouri River Basin Water Management Monthly Update

Missouri River Basin Water Management Monthly Update

Upper Missouri River Basin February 2018 Calendar Year Runoff Forecast February 6, 2018

FORECAST-BASED OPERATIONS AT FOLSOM DAM AND LAKE

Elevation (ft) 50th to 75th Percentile 25th to 50th Percentile Median Observed /1 11/1 12/1 1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 Date

Climate Variability. Eric Salathé. Climate Impacts Group & Department of Atmospheric Sciences University of Washington. Thanks to Nathan Mantua

Northwest Outlook October 2016

Missouri River Basin Climate Outlook 1 May Dr. Dennis Todey State Climatologist South Dakota State Univ.

Upper Missouri River Basin December 2017 Calendar Year Runoff Forecast December 5, 2017

APPLICATIONS OF DOWNSCALING: HYDROLOGY AND WATER RESOURCES EXAMPLES

Folsom Dam Water Control Manual Update Joint Federal Project, Folsom Dam

Flood Risk Assessment

Appendix A Total Dissolved Gas. Fixed Monitoring Stations

Natural Resources Conservation Service Idaho Water Supply Outlook Report January 1, 2016

Upper Missouri River Basin January 2018 Calendar Year Runoff Forecast January 3, 2018

Elevation (ft) 50th to 75th Percentile 25th to 50th Percentile Median Observed

The data presented in this graph are provisional and are intended to provide an estimate of Libby Dam forebay elevation (Lake Koocanusa).

Update on Seasonal Conditions & Summer Weather Outlook

Climate Change RMJOC Study Summary

Office of the Washington State Climatologist

The Climate of Oregon Climate Zone 4 Northern Cascades

2013 Snake River Fall Chinook Salmon Spawning Summary 2,667 2, ,391

A GIS Analysis of Climate Change and Snowpack on Columbia Basin Tribal Lands. Abstract

Folsom Dam Water Control Manual Update Joint Federal Project, Folsom Dam

Climate also has a large influence on how local ecosystems have evolved and how we interact with them.

Great Lakes Update. Great Lakes Winter and Spring Summary January June Vol. 187 Great Lakes Update August 2012

3.0 TECHNICAL FEASIBILITY

Conditional weather resampling for ensemble streamflow forecasting

A Report on a Statistical Model to Forecast Seasonal Inflows to Cowichan Lake

Office of the Washington State Climatologist

Webinar and Weekly Summary February 15th, 2011

2015 Fall Conditions Report

The following information is provided for your use in describing climate and water supply conditions in the West as of April 1, 2003.

Great Lakes Update. Volume 199: 2017 Annual Summary. Background

Office of the Washington State Climatologist

Integrating Weather Forecasts into Folsom Reservoir Operations

A Review of the 2007 Water Year in Colorado

MEMORANDUM. Fish Passage Advisory Committee. Fish Passage Center. DATE: May 15, 2018

Monthly Long Range Weather Commentary Issued: February 15, 2015 Steven A. Root, CCM, President/CEO

Climate Forecasts and Forecast Uncertainty

Proposal to limit Namakan Lake to 1970 Upper Rule Curve for remainder of summer

Monthly Long Range Weather Commentary Issued: APRIL 18, 2017 Steven A. Root, CCM, Chief Analytics Officer, Sr. VP,

San Francisco Public Utilities Commission Hydrological Conditions Report For March 2016

Drought Early Warning for the Apalachicola- Chattahoochee-Flint River Basin 20 December 2016

Operator and Modeler Collaboration on Truckee- Carson River Operations Using Ensembles River Ware User Group Meeting Thursday February 1, 2018

Oregon Basin Outlook Report

Sierra Weather and Climate Update

Office of the Washington State Climatologist

Upper Missouri River Basin May 2018 Calendar Year Runoff Forecast May 4, 2018

MINNESOTA POWER ST LOUIS RIVER PROJECT FERC 2360 ISLAND LAKE RESERVOIR TECHNICAL COMMITTEE MEETING SUMMARY

INVISIBLE WATER COSTS

March 1, 2003 Western Snowpack Conditions and Water Supply Forecasts

Great Lakes Update. Volume 194: 2015 Annual Summary

What does the El Niño have in store for the Upper Colorado Basin?

Transcription:

FISH PASSAGE CENTER 847 NE 19 th Avenue, #250, Portland, OR 97232 Phone: (503) 833-3900 Fax: (503) 232-1259 www.fpc.org/ e-mail us at fpcstaff@fpc.org MEMORANDUM To: From: Fish Passage Advisory Committee (FPAC) FPC Staff Date: January 13, 2016 Subject: Action Notes from January 12, 2016, FPAC meeting On January 12, 2016, FPAC met via conference call for its weekly meeting. The following people participated in the meeting: Paul Wagner (FPAC Co-Chair NOAA) Tom Lorz (FPAC Co-Chair CRITFC) Brandon Chockley (FPC) Charlie Morrill (WDFW) Dave Benner (FPC) Erick Van Dyke (ODFW) Joe Skalicky (USFWS) Kyle Dittmer (CRITFC) Margaret Filardo (FPC) Rick Martinson (PSMFC) Russ Kiefer (IDFG) Sheri Sears (Colville Tribe) Tom Skiles (CRITFC) Tommy Garrison (FPC) AGENDA ITEMS Approval of Notes from December 15 Meeting December 15 notes were approved. A few FPAC members had comments on Draft notes from January 5 meeting. FPC will incorporate comments and post new draft on the web. FPAC should provide comments on new draft by next week s meeting (Jan. 19). \2016_Files\FPAC\0112\01122016DraftNotes.doc

Water Supply/Flood Control Dave Benner (FPC) provided a summary of the current reservoir operations and water supply forecasts, snowpack estimates, and ESP runoff volumes. See the attached document. Weather Kyle Dittmer (CRITFC) provided a summary of weather conditions and water year status. See attached. El Niño has weakened over past month. Peak was in Sept./Oct. of 2015. Still a chance that may strengthen within the next 30 days. Kyle provided a brief synopsis of current CRITFC water supply forecast at The Dalles. o Jan.-July 95.5 MAF (94% of normal) o Apr.-July 74.6 MAF (93% of normal) CRITFC water supply forecast includes the following El Niño years: o WY 1940, ʹ41, ʹ42 Warm PDO, El Niño o WY 1958, ʹ64, ʹ66, ʹ70, ʹ73 Cold PDO, El Niño o WY 1977, ʹ78, ʹ80, ʹ83, ʹ76, ʹ95, ʹ98 Warm PDO, El Niño o WY 2003, ʹ04, ʹ10, ʹ13, ʹ15 Cold PDO, El Niño Chum Operations for Incubation Average tailrace elevations at BON have ranged from 13.0 to 13.9 feet over the last week. This is higher than the requested 12.2 12.5 feet and Grand Coulee (GCL) was being drafted during this period. According to BPA, the higher elevations are due to releases from Canada (20 Kcfs from Arrow), per Non-Treaty Storage Agreement (NTS). BPA staff stated that the accounting for the 20 Kcfs is based on flows in Lower Columbia at Bonneville Dam above the base chum operation of 12.2ʹ. Unclear why draft from GCL occurred to meet chum operation, given that Canada is releasing water for NTS. Why can t GCL operation take advantage of Canadian NTS water when it s there? o FPAC will be seeking a more thorough explanation for this operation at tomorrow s TMT call. FPAC members asked if there are other options for NTS water. o No, Canada gets to decide when they want to release NTS water. Paul Wagner (NOAA) circulated a new COE analysis for Chum operations (attached). COE analysis uses current water supply forecast and assumes hypothetical chum operations to estimate probability of meeting the April 10 GCL Upper Rule Curve (URC) elevation. o COE analysis likely does not account for any additional water from Canadian NTS releases. FPAC would like to continue to get this analysis, with the following suggested additions: o Instead of 60-year ESP trace, could we focus on analog years? Suggested that perhaps focus on El Niño years (similar to CRITFC water supply forecast). Page 2 of 4

o COE should track daily information on when tailrace elevations exceeded elevations specified by Chum operation in addition to providing information as to why elevations exceeded desired levels (i.e., local rainfall, NTS releases, drafting of GCL, etc.) and for what purpose. Question at hand is: Is there sufficient information to recommend dropping current Chum operation elevation below 12.2 12.5-foot recommendation? o No (stay the course). Joe Skalicky (USFWS) suggested that we need to have a conversation about the types of data that need to be incorporated into Chum monitoring for Ives/Pierce complex. Important to have these conversations now in order to have them in place for fall 2016. Comment on Draft Transport COP Paul Wagner (NOAA) had a conversation with new COE Point-of-Contact to explain that this COP should not be considered final because agencies and tribes are still waiting for COE to address past comments on the draft COP. o Paul will follow-up on this conversation with an e-mail to COE POC. NOAA has not approved this COP as final and does not plan to until these past comments are formally addressed. Russ Kiefer (IDFG) suggested that FPC should review the Transportation COP and provide comments on accuracy of data/analyses, appropriate uses of data, etc. Tom Lorz (CRITFC) will follow-up with official request to FPC. FPAC members should review newest version of Transportation COP and provide comments to the COE. Once FPAC members have submitted comments, FPAC will request a meeting with the COE to officially address comments from past drafts and comments from this latest draft. The proposed time frame for new comments to be submitted is by late January/early February with a late February meeting with the COE. IDFG suggested this agenda item should stay on future FPAC agendas until a meeting with COE occurs. Other CSS Sort-By-Code o CSS submitted Sort-by-Code for 2016 outmigration. Similar to past requests with two additions: (1) additional tags for subyearling fall Chinook marking and (2) only one hatchery sockeye group (Springfield Hatchery) o Brandon Chockley (FPC) provided a brief review of CSS tagging and changes that were incorporated in 2015. Changes for 2015 are being carried into 2016. o No objections from FPAC. Paul Wagner will check with NOAA to make sure there are no conflicts and will approve by end of the week. Update on PIT-Tag Detection System Interference o In fall 2015, the U.S. Navy broadcast a low-frequency signal that interfered with detection abilities of several PIT-tag detection systems in the basin. o To date, it is unclear if the Navy plans to test these frequencies again. Page 3 of 4

o Discussions/Investigations are on-going but it appears that they might need to occur at a higher level within agencies. Coordination TMT conference call tomorrow (Jan. 13, 2016) FPAC face-to-face at FPC next week (Jan. 19, 9:00 AM). These minutes have been reviewed and approved by the Fish Passage Advisory Committee. Page 4 of 4

FPAC Agenda for Tuesday January 12, 2016 Meeting time: 9:00 AM 1. Approval of notes from December 15 meeting 2. Water supply and reservoir status 3. Weather update and climate forecast 4. Chum operations for incubation 5. Comments on draft Transport COP 6. Other 7. Coordination for other schedule meetings

FISH PASSAGE CENTER 847 NE 19 th Avenue, #250, Portland, OR 97232 Phone: (503) 833-3900 Fax: (503) 232-1259 www.fpc.org/ e-mail us at fpcstaff@fpc.org MEMORANDUM TO: FROM: FPAC David Benner DATE: January 11, 2016 RE: Reservoir Operations/Water Supply/Snowpack/BON TW Grand Coulee Reservoir is at 1,280.9 feet (11-10-16) and has drafted 2.4 feet over the last week. Outflows at Grand Coulee have ranged between 91.7 and 106.1 Kcfs over the last week. The Libby Reservoir is currently at elevation 2,414.2 feet (11-10-16) and has drafted 0.4 feet over the previous week. Daily average outflows at Libby Dam have been 4.0 Kcfs over the last week. Hungry Horse is currently at an elevation of 3,521.4 feet (1-10-16) and drafted 1.0 feet over the last week. Outflows at Hungry Horse have been 2.2 2.6 Kcfs over the last week. Dworshak is currently at an elevation of 1,522.6 feet (1-10-16) and has refilled 0.2 feet over the last week. Outflows have been 1.6 1.7 Kcfs over the last week. The Brownlee Reservoir was at an elevation of 2,065.6 feet on January 10, 2016, and has drafted 3.8 feet over the last week. Hells Canyon outflows have ranged between 11.0 and 18.7 Kcfs over the last four days with the minimum outflow now set at 9.6 Kcfs. \fpac\0112\db_fpac summary 1-11-16.docx

December 13, 2015 5-day QPF ESP January 11, 2016 5-day QPF ESP Location % Average (1981 2010) Runoff Volume (Kaf) % Average (1981 2010) Runoff Volume (Kaf) The Dalles (Apr Aug) 101 88,150 93 81,400 Grand Coulee (Apr Aug) 103 58,428 91 51,646 Libby Res. Inflow, MT 109 6,388 (Apr Aug) 98** 5,793** 93 5,498 Hungry Horse Res. Inflow, MT (Apr Aug) 89 1,732 82 1,581 Lower Granite Res. Inflow (Apr July) 96 18,997 92 18,303 Brownlee Res. Inflow (Apr July) 81 4,450 83 4,528 Dworshak Res. Inflow (Apr July) 96 69** 2,316 1,626** 90 79* 2,169 1,913* * COE January Forecast ** COE December Forecast Page 2 of 6

12-14-15 Snow Water Equivalent (% Avg.) 1-11-16 Snow Water Equivalent (% Avg.) Basin Columbia above the Snake River Confluence Kootenai River in Montana 91 76 Flathead River 71 71 Upper Clark Fork River 89 89 Bitterroot 101 93 Lower Clark Fork River 77 71 Idaho Panhandle Region 80 74 Columbia above Methow 139 116 Chelan, Entiat, Wenatchee 123 107 Yakima, Ahtanum 109 114 Snake River Average * 98 90 Snake above Palisades 90 83 Henry Fork, Teton, Willow, Blackfoot, 85 90 Portneuf Big and Little Wood 129 113 Big and Little Lost 117 106 Raft, Goose, Salmon Falls, Bruneau 136 148 Weiser, Payette, Boise 141 111 Owyhee Malheur 161 138 Grande Ronde, Powder, Burnt, Imnaha 123 102 Clearwater and Salmon 105 94 Average * 121 109 Lower Columbia between Bonneville and McNary Umatilla, Walla Walla, Willow 93 102 Deschutes, Crooked, John Day 115 112 Lower Columbia, Hood River 66 122 Average * 91 112 Bonneville TW (2016) Date Average Minimum Maximum 4-Jan 13.4 12.6 15.8 5-Jan 13.4 12.6 15.7 6-Jan 13.7 12.4 16.1 7-Jan 13.6 12.8 14.9 8-Jan 13.9 13.4 14.6 9-Jan 13.1 12.9 13.5 10-Jan 13.0 12.6 13.4 Page 3 of 6

1285.0 1275.0 Reservoir Elevation 1265.0 1255.0 1245.0 1235.0 Actual Reservoir Elevation Full Pool Reservoir Elevation 1225.0 April FC Elevations 1215.0 Figure 1. Grand Coulee Time 2450.0 2430.0 Reservoir Elevation 2410.0 2390.0 2370.0 Actual Reservoir Elevation Full Pool Reservoir Elevation April FC Elevations 2350.0 2330.0 Figure 2. Libby Time Page 4 of 6

1600.0 1580.0 1560.0 Reservoir Elevation 1540.0 1520.0 1500.0 1480.0 Actual Reservoir Elevation Full Pool Reservoir Elevation 1460.0 April System FC 1440.0 Time Figure 3. Dworshak 3560.0 3540.0 Reservoir Elevation 3520.0 3500.0 Actual Reservoir Elevation 3480.0 Full Pool Reservoir Elevation April FC Elevations 3460.0 Figure 4. Hungry Horse Time Page 5 of 6

2080.0 2070.0 Reservoir Elevation 2060.0 2050.0 2040.0 2030.0 2020.0 Actual Reservoir Elevation Full Pool Reservoir Elevation April FC Elevations 2010.0 Figure 5. Brownlee Time Page 6 of 6

Water Year 2016 Precipitation Monthly Clim Norm 1981-2010 Monthly Seasonal Temp. (degf) Dec. 1-31 (Oct. 1 - now) (pro-rated) Portland 278% 166% 3 UPPER-COLUMBIA: Kamloops 166% 124% 3.6 Revelstoke 97% 105% 3.2 Cranbrook 155% 145% 2.9 Creston 303% 93% 3.4 average: 180% 117% 3.3 Normal: 1.90 6.18 24.9 MIDDLE-COLUMBIA: Pendleton 155% 107% 3.8 Redmond 162% 129% 1.6 Yakima 227% 149% 2.8 Wenatchee AP 201% 131% 2.7 Omak 174% 110% 1.9 Spokane 193% 110% 3.3 average: 185% 123% 2.7 Normal: 1.68 3.92 29.3 LOWER SNAKE: Lewiston 164% 106% 3.5 Pullman 284% 154% 1.7 Stanley 391% 156% 9.5 Challis 112% 121% 5.4 average: 238% 134% 5.0 Normal: 1.14 3.77 24.0 UPPER and MIDDLE SNAKE: McCall 329% 171% 2.8 Ontario 170% 139% 3.2 Boise 110% 119% 1.1 Twin Falls 131% 135% -0.5 Burley 75% 99% 4.2 Pocatello 76% 111% 6.5 Idaho Falls 45% 90% 7 average: 134% 123% 3.5 Normal: 1.40 3.59 25.6 Forecasted Daily Rain (in inches), BON dam area: 12-Jan 1.44 13-Jan 0.31 14-Jan 0.59 15-Jan 0 16-Jan 0 17-Jan 0 18-Jan 0

Mt. Hood Test Site, Oregon (north Oregon Cascades). Elevation 5370 feet. Irish Taylor, Oregon (central Oregon Cascades). Elevation 5540 feet.

Stevens Pass, Washington (central Washington Cascades). Elevation 3950 feet. Mountain Meadows, Idaho (Panhandle, Salmon River drainage). Elevation 6360 feet.

Model Data: ENSEMBLE STREAMFLOW PREDICITON (ESP) MODEL ANALYSIS RESULTS Used 06-Jan-2016 forecast data set from Northwest River Forecast Center with 61 ensemble years (1949-2009) and 5 days QPF. Corresponds to a median April-August forecast volume at The Dalles of 83,171 KAF. Flood Risk Management Assumptions and Elevation Targets Out-month Flood Risk Management elevations are based on individual ESP trace volumes for February onward. Best estimates of the January forecast were used for Flood Risk Management Elevations in January in all ESP years. Grand Coulee April 15 Flood Control Elevation Target (feet) Model Scenarios: Maximum Minimum Median 1283.3 1234.0 1263.3 Three scenarios are analyzed: targeting Bonneville tailwater elevations of 1.) 11.5 feet, 2.) 12.0 feet, and 3.) 12.5 feet corresponding to flow rates of 125, 130, and 135 kcfs, respectively. Results Summary: Scenario Bonneville Tailwater Target (feet) Median April 15 Ending Elevation at Grand Coulee (feet) Percent of 61 ESP Simulation Years Meeting April 15 URC 1 11.5 1260.4 93 2 12.0 1257.0 85 3 12.5 1252.0 75 Page 2 shows histograms of the magnitude of April 15 elevation target misses for each scenario. Page 3 shows summary plots of Grand Coulee ending elevations for each scenario. Page 4 shows summary plots of Bonneville flows for each scenario 1

2

Elevation (feet) Grand Coulee Forebay Elevation ESP 1-6-2016- BON TARGET 125 KCFS (~11.5') 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 Min-5% 5-25% 25-50% 50-75% 75-95% 95%-Max Obsv Median Elevation (feet) Grand Coulee Forebay Elevation ESP 1-6-2016- BON TARGET 130 KCFS (~12.0') 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 Min-5% 5-25% 25-50% 50-75% 75-95% 95%-Max Obsv Median Elevation (feet) Grand Coulee Forebay Elevation ESP 1-6-2016- BON TARGET 135 KCFS (~12.5') 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr 1300.0 1290.0 1280.0 1270.0 1260.0 1250.0 1240.0 1230.0 1220.0 1210.0 1200.0 Min-5% 5-25% 25-50% 50-75% 75-95% 95%-Max Obsv Median 3

400000 Bonneville ESP 1-6-2016- BON TARGET 125 KCFS (~11.5') Flow (cfs) 350000 300000 250000 200000 150000 100000 50000 0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr Min-5% 5-75% 25-50% 50-75% 75-95% 95%-Max Median Obsv 400000 Bonneville ESP 1-6-2016- BON TARGET 130 KCFS (~12.0') Flow (cfs) 350000 300000 250000 200000 150000 100000 50000 0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr Min-5% 5-75% 25-50% 50-75% 75-95% 95%-Max Median Obsv 400000 Bonneville ESP 1-6-2016- BON TARGET 135 KCFS (~12.5') Flow (cfs) 350000 300000 250000 200000 150000 100000 50000 0 1-Oct 1-Nov 1-Dec 1-Jan 1-Feb 1-Mar 1-Apr Min-5% 5-75% 25-50% 50-75% 75-95% 95%-Max Median Obsv 4