Middle Fork Project Flow and Temperature Modeling (Status Report)

Middle Fork ProjectMiddle Fork ProjectFlow and Temperature ModelingFlow and Temperature Modeling

(Status Report)(Status Report)

November 4, 2008November 4, 2008

2

AgendaAgenda

9:00 AM - 12:00 PM9:00 AM - 12:00 PM IntroductionsIntroductions Water Temperature Models Development Water Temperature Models Development

Progress Report Progress Report Reservoir ModelingReservoir Modeling River ModelingRiver Modeling Interim Model Application and TestingInterim Model Application and Testing DataData

Next Steps and ScheduleNext Steps and Schedule 12:00 PM12:00 PM

AdjournAdjourn

3

Principal Project Tasks: StatusPrincipal Project Tasks: Status Model Implementation/ConstructionModel Implementation/Construction

Reservoirs (complete)Reservoirs (complete) Rivers (Rubicon complete, MF in progress)Rivers (Rubicon complete, MF in progress) Tunnel (complete - relationship)Tunnel (complete - relationship)

Model CalibrationModel Calibration ReservoirsReservoirs

French Meadows – draft (2006-07)French Meadows – draft (2006-07) Hell Hole – draft (2006-07)Hell Hole – draft (2006-07) Ralston – in progressRalston – in progress

Rivers (pending)Rivers (pending) Tunnel model calibration (complete - relationship)Tunnel model calibration (complete - relationship)

Other TasksOther Tasks model refinementmodel refinement

River Geometry River Geometry Technology transfer (ongoing)Technology transfer (ongoing)

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OutlineOutline

ReservoirsReservoirs French Meadows and Hell HoleFrench Meadows and Hell Hole Ralston AfterbayRalston Afterbay

RiversRivers RubiconRubicon Middle Fork (above Ralston Afterbay)Middle Fork (above Ralston Afterbay) Middle Fork (below Ralston Afterbay)Middle Fork (below Ralston Afterbay)

TunnelsTunnels Data relationshipData relationship

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ReservoirsReservoirs

French Meadows and Hell HoleFrench Meadows and Hell Hole Refined calibrationRefined calibration

GeometryGeometry Wind sheltering considerationsWind sheltering considerations Assumptions (a and b are constant Assumptions (a and b are constant

among reservoirs, wind sheltering among reservoirs, wind sheltering differs, etc.)differs, etc.)

2006, 2007 results 2006, 2007 results

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Hell Hole GeometryHell Hole Geometry

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Wind shelteringWind sheltering

Meteorological data may not be Meteorological data may not be representative of the effect over the representative of the effect over the reservoirsreservoirs (Location of met station)(Location of met station)

Effect of wind sheltering may be Effect of wind sheltering may be different for the different part of the different for the different part of the reservoir and different time of the reservoir and different time of the yearyear Apply different wind sheltering values Apply different wind sheltering values

for upstream and downstream of the for upstream and downstream of the reservoirs seasonallyreservoirs seasonally

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Hell HoleHell Hole

Rubicon River and Five Lakes Creek Rubicon River and Five Lakes Creek inflow combine as one inputinflow combine as one input

Weighted averaged input water Weighted averaged input water temperature is appliedtemperature is applied

RR1 is used for missing FL1 dataRR1 is used for missing FL1 data

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French Meadows, 2006French Meadows, 2006Segment 23Segment 23

Jul 7, 2006 JDAY188.5 FM1 (Segment 23)

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Aug 10, 2006 JDAY222.5 FM1 (Segment 23)

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Sep 9, 2006 JDAY252.5 FM1 (Segment 23)

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Oct 28, 2006 JDAY301.5 FM1 (Segment 23)

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French Meadows, 2006 French Meadows, 2006 Segment 17Segment 17


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Sep 9, 2006 JDAY252.5 FM2 (Segment 17)

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Oct 28, 2006 JDAY301.5 FM2 (Segment 17)

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May 30, 2007 JDAY150.5 FM1 (Segment 23)

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May 30, 2007 JDAY150.5 FM2 (Segment 17)

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Hell Hole, 2006Hell Hole, 2006Jul 7, 2006 JDAY188.5 HH1 (Segment 25)

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Aug 10, 2006 JDAY222.5 HH1 (Segment 25)

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Hell Hole, 2007Hell Hole, 2007May 30, 2007 JDAY150.5 HH1 (Segment 25)

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Jul 13, 2007 JDAY194.5 HH1 (Segment 25)

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Ralston ReservoirRalston Reservoir

GeometryGeometry Highly detailed (run time ~90 min)Highly detailed (run time ~90 min) Modified (run time ~ 18 min)Modified (run time ~ 18 min)

Inflows and outflowsInflows and outflows ActualActual Water balance model representationWater balance model representation

Ralston PH and Rubicon River inflows togetherRalston PH and Rubicon River inflows together

Water Temperature Water Temperature Placeholder dataPlaceholder data

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Ralston Reservoir geometry – high resolutionRalston Reservoir geometry – high resolution

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Ralston Reservoir geometry- Ralston Reservoir geometry- reducedreduced

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Ralston Inflows and OutflowsRalston Inflows and Outflows

MF American River

Rubicon River

Ralston PH

Oxbow PH

Ralston Afterbay

RalstonReservoir

RR+RPH

MF

A

RAB

OPH

Water balance model representation

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Ralston Inflow TemperatureRalston Inflow Temperature

RR4

OX1MF10

MF10MF10 RR4RR4 OX1OX1

20062006 AvailablAvailablee

July 14- Dec July 14- Dec 3131

NoNo

20072007 AvailablAvailablee

AvailableAvailable NoNo

Water temperature data availability

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Ralston Reservoir Results (steady Ralston Reservoir Results (steady state)state)

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RiversRivers

GeneralGeneral All meteorological data are completeAll meteorological data are complete All temperature data are completeAll temperature data are complete Geometry X-Y-Z data completeGeometry X-Y-Z data complete All shade files are completeAll shade files are complete

In progressIn progress Cross sectional dataCross sectional data Sub-daily flow dataSub-daily flow data

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RubiconRubicon

Implementation assumptionsImplementation assumptions Estimated cross sectional geometryEstimated cross sectional geometry Flow: from Hell Hole Reservoir Flow: from Hell Hole Reservoir

simulationsimulation Water temperatures: from Hell Hole Water temperatures: from Hell Hole

Reservoir simulationReservoir simulation Relationship to span alluviumRelationship to span alluvium

Next StepsNext Steps Cross section geometryCross section geometry Final simulated temperatures below Hell Final simulated temperatures below Hell

Hole (CE-QUAL-W2)Hole (CE-QUAL-W2)

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Rubicon River Boundary Rubicon River Boundary ConditionsConditions

4324000

4324500

4325000

4325500

4326000

4326500

721500 722000 722500 723000 723500 724000 724500

UTM-X Coordinates

UT

M-Y

Coo

rdin

ates

River

RR2

RR3

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-6

-4

-2

0

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1/1/06 2/20/06 4/11/06 5/31/06 7/20/06 9/8/06 10/28/06 12/17/06

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, oC

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RR2RR3Sim HH outf low TwRR3-HHSpillRelease

Michael Deas

Too busy. We need to clean up these graphs, perhaps use more than one slide. Use labels to guide viewer.

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Objective: Estimate appropriate boundary condition in alluvial Objective: Estimate appropriate boundary condition in alluvial section at headwater under spill and non-spill condition. section at headwater under spill and non-spill condition.

Headwater of the Rubicon River model was placed at RR3 Headwater of the Rubicon River model was placed at RR3 because of the dry alluvial reach upstream.because of the dry alluvial reach upstream.

Develop dual criteria to provide river inflow temperature Develop dual criteria to provide river inflow temperature boundary conditionboundary condition

When Hell Hole Dam is spilling:When Hell Hole Dam is spilling:1.1. RR3 Tw is similar to Hell Hole spill Tw – Large flows overwhelm RR3 Tw is similar to Hell Hole spill Tw – Large flows overwhelm

small releases from the dam and short transit time yields minimum small releases from the dam and short transit time yields minimum opportunity for heating.opportunity for heating.

2.2. Potential lag effect at RR3 Tw – Due to the spill filling alluvium and Potential lag effect at RR3 Tw – Due to the spill filling alluvium and then slowly released.then slowly released.

When Hell Hole Dam is not spilling:When Hell Hole Dam is not spilling:

1.1. Between RR2 and RR3, Tw difference of about 2Between RR2 and RR3, Tw difference of about 2ooF in June. It F in June. It

diminishes to nearly 0diminishes to nearly 0ooF by October 1F by October 1stst..

Linear relationship assumed from terminus of spill to mid-October.Linear relationship assumed from terminus of spill to mid-October.

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Rubicon River-Ralston InterfaceRubicon River-Ralston Interface

464

472

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MF AmericanMF American

Middle Fork above RalstonMiddle Fork above Ralston Implementation assumptionsImplementation assumptions

Estimated cross sectional geometryEstimated cross sectional geometry FlowsFlows Characterization of InterbayCharacterization of Interbay Temperatures (simulated from French Meadows)Temperatures (simulated from French Meadows)

Next StepsNext Steps Cross section geometryCross section geometry Refinement at InterbayRefinement at Interbay Sub-daily flow representationSub-daily flow representation Final simulated temperatures below French MeadowsFinal simulated temperatures below French Meadows

Middle Fork below Ralston – in progressMiddle Fork below Ralston – in progress

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MFAR (French Meadows-Ralston) MFAR (French Meadows-Ralston) GridGrid

Interbay

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MFAR (French Meadows-Ralston) MFAR (French Meadows-Ralston) GridGrid

4319250

4319300

4319350

4319400

4319450

4319500

4319550

4319600

4319650

4319700

695800 695900 696000 696100 696200 696300 696400UTM X-Coordinates, m

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Sub-daily Flow RepresentationSub-daily Flow Representation

Water Balance Model DisaggregationWater Balance Model Disaggregation Use production data to estimate sub-Use production data to estimate sub-

daily flow signal (ECORP) daily flow signal (ECORP) Discrepancies existed. Discrepancies existed. Scaled flows such that sub-daily Scaled flows such that sub-daily

flows captured daily flow totalsflows captured daily flow totals

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River Reach Cross SectionsRiver Reach Cross Sections Representative cross sections for each habitat Representative cross sections for each habitat

type (in each reach) will be formulated and type (in each reach) will be formulated and assigned to the longitudinal profile consistent assigned to the longitudinal profile consistent with the habitat typing. All habitat types will be with the habitat typing. All habitat types will be assessed to identify representative cross sectionsassessed to identify representative cross sections

Cross sections based on habitat types: HGR, LGR, Cross sections based on habitat types: HGR, LGR, RUN, and POOL (no cascades included). RUN, and POOL (no cascades included).

Habitat designations were examined at three Habitat designations were examined at three spatial densities: 25, 50, and 100 m inter-node spatial densities: 25, 50, and 100 m inter-node spacingspacing

25 m 50 m 100 mHGR 20.2% 19.5% 19.1% 19.5%LGR 5.9% 6.2% 6.8% 6.2%RUN 26.2% 27.6% 27.8% 26.2%

POOL 41.9% 39.6% 40.7% 42.6%CAS 5.9% 7.1% 5.6% 5.4%

% Habitat ResultsMapped % Habitat

for ReachHabitat

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River Reach Cross SectionsRiver Reach Cross Sections Elements consist of 3 nodes. Assume that the top Elements consist of 3 nodes. Assume that the top

two nodes of each element represent the habitat two nodes of each element represent the habitat type. The lower most node is common between type. The lower most node is common between adjacent elements. Because the finite element adjacent elements. Because the finite element model integrates between nodes this lower node in model integrates between nodes this lower node in the element serves approximately as a "transition" the element serves approximately as a "transition" between adjacent element habitat types.between adjacent element habitat types.

Scheme will be tested and refined as necessaryScheme will be tested and refined as necessary Cross sectional area and surface width will be Cross sectional area and surface width will be

mapped from actual cross sections to a trapezoidal mapped from actual cross sections to a trapezoidal form to preserve the area and width in an form to preserve the area and width in an appropriate fashion.appropriate fashion.

Additionally, to improve pool representation in Additionally, to improve pool representation in (depths and velocities), slope factors will be used for (depths and velocities), slope factors will be used for all pool elements. The riffles and runs will not be all pool elements. The riffles and runs will not be represented with explicit slope factors unless the represented with explicit slope factors unless the need arises.need arises.

Michael Deas

Clean up and add graphics to illustrate. Will have more details on methiod when cross section information is available.

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Stream Cross Section Stream Cross Section RepresentationRepresentation

Map AreaAnd Width

0.0

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ge

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Model

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Actual Cross SectionsActual Cross SectionsHGR

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Actual Cross SectionsActual Cross SectionsLGR

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Actual Cross SectionsActual Cross SectionsRUN

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Actual Cross SectionsActual Cross SectionsPOOL

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Tunnel WorkTunnel Work

Heating assessment based on field Heating assessment based on field datadata

Filter dataFilter data Daily AverageDaily Average Sub-daily data Sub-daily data

Peaking periodsPeaking periods With transition removedWith transition removed Lagging temperatures – based on travel time Lagging temperatures – based on travel time

through tunnel at plant flow ratethrough tunnel at plant flow rate

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French Meadows Power HouseFrench Meadows Power House

Daily temperature

Temperature differences

(70% 0.26oF or less)

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Ralston Power HouseRalston Power House

Daily temperature

Temperature differences

(90% 1oF or less, 0.56oF at full

pipe)

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Rate of heatingRate of heating

Approximately Linear, minimal heatingApproximately Linear, minimal heating Rate of heating is approximately 0.015Rate of heating is approximately 0.015ooF F

per 1000 feetper 1000 feet Recommend using this relationship Recommend using this relationship

Ralston

French Meadows

Ralston

French Meadows

Documents

Middle Fork Project Flow and Temperature Modeling (Status Report)