Santa Ana River Wasteload Allocation Model Update BASIN MONITORING - - PowerPoint PPT Presentation

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Santa Ana River Wasteload Allocation Model Update BASIN MONITORING - - PowerPoint PPT Presentation

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Santa Ana River Wasteload Allocation Model Update BASIN MONITORING PROGRAM TASK FORCE September 19, 2017 Model Development Existing WLAM (R4) WLAM Update Expanded Area 564 subareas were delineated. Each subarea consists of

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SLIDE 1

Santa Ana River Wasteload Allocation Model Update

September 19, 2017

BASIN MONITORING PROGRAM TASK FORCE

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SLIDE 2

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Model Development

Existing WLAM (R4)

WLAM Update Expanded Area

  • 564 subareas were delineated.
  • Each subarea consists of
  • Stream segment,
  • Pervious land area, and
  • Impervious land area.
  • They were delineated based on:
  • Topography
  • Drainage Patterns
  • Types of stream channels, and
  • Location of gaging stations and recharge basins

9/19/2017

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SLIDE 3

3

Hydrologic Simulation Program Fortran - HSPF

9/19/2017

Precipitation

ET Surface Runoff Deep Percolation Streambed Percolation

Infiltration Interflow

  • Comprehensive & Physically Based,
  • Simulates ALL Water Cycle Components & Water Quality,
  • Supported & Maintained by Federal Agencies (EPA & USGS),
  • Established Standard Guidelines and Calibration Performance Criteria,
  • Windows-Based Interface with Powerful Pre- & Post- Processors, and
  • Software is Free.
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4

Coupling Process of HSPF and OCWD Recharge Facilities Model (RFM)

9/19/2017

SAR Diversion

OCWD RFM Outlet

Prado Inflow

& Tributary

Streamflow to SAR (shown in Yellow)

Step 1 HSPF

Step 2 OCWD RFM Streamflow at OCWD RFM Outlet

Step 3 HSPF

Streamflow at SAR at Santa Ana

Prado Dam

Recharge Basins

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SLIDE 5

Calibration Process

5

  • Adjust model parameters until the model provides a reasonable

match between the model-simulated and measured data.

  • Lower zone nominal soil moisture storage,
  • Base groundwater recession,
  • Fraction of groundwater inflow to deep recharge,
  • Fraction of remaining ET from baseflow,
  • Interflow inflow parameter,
  • Lower zone ET parameter,
  • Function tables (FTABLE) which includes physical information (shape, depth,

width, slope, length, Manning Factor, and materials), and infiltration rates for reaches of each sub-watershed, and

  • Nitrogen reaction rate coefficient.

9/19/2017

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Location of Streamflow Calibration Targets

9/19/2017

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Location of TDS/TIN Calibration Targets

9/19/2017

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Calibration Performance Criteria

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Type of Flow Data R2 (Goodness-of-Fit) Calibration Performance Daily Flow R2 < 0.60 Poor Daily Flow 0.60 < R2 < 0.70 Fair Daily Flow 0.70 < R2 < 0.80 Good Daily Flow R2 > 0.80 Very Good Monthly Flow R2 < 0.65 Poor Monthly Flow 0.65 < R2 < 0.75 Fair Monthly Flow 0.75 < R2 < 0.85 Good Monthly Flow R2 > 0.85 Very Good

Source: Donigian (2002)

9/19/2017

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Existing WLAM (R4) WLAM Update (HSPF) Daily Streamflow

SAR at MWD Crossing

0.1 1 10 100 1000 10000 100000 0.1 1 10 100 1000 10000 100000 Model-Calculated Daily Streamflow, cfs Measured Daily Streamflow, cfs

R4 – WY 1995 to 2006

R2 = 0.68

Fair

0.1 1 10 100 1000 10000 100000 0.1 1 10 100 1000 10000 100000 Model-Calculated Daily Streamflow, cfs Measured Daily Streamflow, cfs

HSPF – WY 2007 to 2016

R2 = 0.91

Very Good

9/19/2017

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SLIDE 10

SAR at MWD Crossing

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Existing WLAM (R4) WLAM Update (HSPF) Monthly Streamflow

0.1 1 10 100 1000 10000 100000 0.1 1 10 100 1000 10000 100000 Model-Calculated Monthly Streamflow, cfs Measured Monthly Streamflow, cfs

R4 – WY 1995 to 2006

R2 = 0.91

Very Good

0.1 1 10 100 1000 10000 100000 0.1 1 10 100 1000 10000 100000 Model-Calculated Monthly Streamflow, cfs Measured Monthly Streamflow, cfs

HSPF – WY 2007 to 2016

R2 = 0.97

Very Good

9/19/2017

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SLIDE 11

Summary of Streamflow Calibration Performance

11

Gaging Station

Daily Streamflow Monthly Streamflow

2008 WLAM (R4) WY 1995-2006 WLAM Update (HSPF) WY 2007-2016 2008 WLAM (R4) WY 1995-2006 WLAM Update (HSPF) WY 2007-2016 San Timoteo Ck near Loma Linda Good Fair Good Fair Warm Ck near San Bernardino Fair Fair Fair Very Good Santa Ana River at E Street Good Very Good Very Good Very Good Santa Ana River at MWD Crossing Fair Very Good Very Good Very Good Temescal Ck at Main Street Poor Fair Good Poor Chino Ck at Schaefer Avenue Fair Very Good Good Good Cucamonga Ck near Mira Loma Poor Very Good Good Very Good Santa Ana River into Prado Dam Fair Very Good Very Good Very Good Santa Ana River at Santa Ana NA Poor NA Good

9/19/2017

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Daily TDS at Santa Ana River at MWD Crossing

12 100 200 300 400 500 600 700 800 900 1,000 Oct-94 Oct-96 Oct-98 Oct-00 Oct-02 Oct-04 Oct-06 Oct-08 Oct-10 Oct-12 Oct-14 Model-Calculated Daily TDS, mg/L WLAM Update (Mean Residual = -0.4 mg/L) 2008 WLAM (Mean Residual = 16.4 mg/L)

Observed Model-Calculated

9/19/2017

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Summary of TDS/TIN Calibration Performance

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Gaging Station TDS, mg/L TIN, mg/L 2008 WLAM (R4) WY 1995-2006 WLAM Update (HSPF) WY 2006-2016 2008 WLAM (R4) WY 1995-2006 WLAM Update (HSPF) WY 2006-2016 Santa Ana River at MWD Crossing 16.4

  • 0.4
  • 0.45
  • 0.40

Santa Ana River below Prado Dam 20.7

  • 2.0
  • 0.07
  • 0.28

Santa Ana River at Imperial Highway near Anaheim NA 7.8 NA

  • 0.21

9/19/2017

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SLIDE 14

Summary

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  • The WLAM was updated with recent data and recalibrated from

October 1, 2006 through September 30, 2016 (Water Years 2007 through 2016).

  • The calibration results show:
  • Good to very good performance at the majority of the streamflow gages .
  • The streamflow calibration performance for the WLAM update is equal to or

better than the 2008 WLAM at nearly all gages.

  • TDS/TIN residuals from the WLAM update calibration are lower than the 2008

WLAM residuals for nearly all gages.

  • The results indicate a satisfactory model calibration.

9/19/2017

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SLIDE 15

Major Assumptions for Waste Load Allocation Scenarios

15 9/19/2017

Scenario Hydrology Land Use Maximum Discharge (Zero Recycled) Planned Recycled / Discharge) 50% of Planned Recycled A WY 1950- 2016 2012 X B X C X D General Plan (2040) X E X F X

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Discharge and Reuse Data

16 9/19/2017

City of Corona City of Beaumont City of Riverside EVMWD SBVMWD WMWD Facility WRF 1 RWQCP WWTP 001 WWTP 002 SNRC (City Creek) WRCRW Discharge (MGD) Current Design 11.5 4 46 8 8 14 Max 11.4 3.30975 31.2 8 8 7.76 Ave 3.4 2.9696 26.8 0.5 4.52 6.44 Min 1.5 2.4232 21.8 0.5 4.5 5.22 2020 Design 11.5 46 12 12 7.5 14 Max 11.5 33.8 12 12 7.5 10.3 Ave 4.6 25 0.5 7 6.4 7 Min 1.5 19 0.5 6.5 6 5.7 2040 Design 15 46 16.8 16.8 7.5 14 Max 15 46 16.8 16.8 7.5 15.3 Ave 8.5 22.5 0.5 14 6.4 10 Min 1.5 19 0.5 13 6 8.5 Reuse of Recycled Water (MGD) Current Max 7.1 In house

  • nly

1.8 0.3 0.3 Ave 2.7 In house

  • nly

0.9 0.2 0.2 Min In house

  • nly

0.6 0.2 0.2 2020 Max 10 10 0.45 0.45 7.5 7 Ave 2.7 4 0.3 0.3 6.4 3 Min 1 0.2 0.2 6 2040 Max 13.5 20 0.63 0.63 7.5 7 Ave 3.5 16.5 0.42 0.42 6.4 3 Min 3 0.2 0.2 6 Water Quality (mg/L) TIN Current Discharge Permit 10 6 / 3.6 10 13 NA NA 10 12-mos. Average 5.5 / 5.2 4.34 4.5 2.5 NA NA 2.2

  • Est. 12 mos. Average in 2040

5.5 / 5.2 10 Unknown Unkno wn 6 2.2 TDS Current Discharge Permit 700 / 770 400 / 300 650 700 700 NA 625 12-mos. Average 655 / 683 434 623 686 686 NA 529

  • Est. 12 mos. Average in 2040

655 / 683 650 Unknown Unkno wn 463 529

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Discharge and Reuse Data

17 9/19/2017

EMWD IEUA City of Redlands City of San Bernardino YVWD Facility Discharge (MGD) Current Design Max Ave Min 2020 Design Max Ave Min 2040 Design Max Ave Min Reuse of Recycled Water (MGD) Current Max Ave Min 2020 Max Ave Min 2040 Max Ave Min Water Quality (mg/L) TIN Current Discharge Permit 12-mos. Average

  • Est. 12 mos. Average

in 2040 TDS Current Discharge Permit 12-mos. Average

  • Est. 12 mos. Average

in 2040

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SLIDE 18

Evaluation of Wastewater Recharge in Percolation Ponds – Pilot Program

18 9/19/2017

  • City of Redlands,
  • Coty of Corona,
  • IEUA, and
  • Dairy ponds in

Chino-North GMZ

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SLIDE 19

19

QUESTIONS?

9/19/2017