WY2003 Simulations

Simulations of FC loading for Water Year 2003 (Oct. 1, 2002 – Sep. 30, 2003)

S10A: Verification using 91x96 grid

All streams, stormwater outfalls, and WWTP were set to “actual conditions” to simulate total FC loading from all sources for Water Year 2003, Oct 1, 2002 – Sep 30, 2003 (WY2003). Model output was compared to observed data.
Review Model Results

S10B: Verification using 94x105 grid

All streams, stormwater outfalls, and WWTP were set to “actual conditions” to simulate total FC loading from all sources for WaterYear 2003. A higher resolution grid was developed to reduce “initial” dilution in areas of low flushing such as the mouths of Clear, Chico, and Karcher Creeks, and other areas including Oyster Bay, Ostrich Bay, Phinney Bay, and near the shipyard. Model output was compared to observed data.
Review Model Results

 

TMDL Simulations Using WY2003

S11: Critical Conditions using the 91x96 grid

All streams, stormwater outfalls, and WWTPs were set to “actual conditions” to simulate total FC loading from all sources for WY2003. The daily max was used to calculate:

  • A 30-day moving average to compare to the water quality standard of 14 cfu/100 ml; and
  • A 30-day moving average of the 90th percentile to compare to the water quality standard of 43 cfu/100 ml.
    Review Simulation Results

    S12: TMDL 100/200

    Set all streams and stormwater outfalls to 100 cfu/100 ml and all WWTPs to 200 cfu/100 ml. The daily max was used to calculate a 30-day moving average to compare to the water quality standard of 14 cfu/100 ml.
    Review Simulation Results

    S13: TMDL 200/400

    Set all streams and stormwater outfalls to 200 cfu/100 ml and all WWTPs to 400 cfu/100 ml. The daily max was used to calculate a 30-day moving average of the 90th percentile to compare to the water quality standard of 43 cfu/100 ml.
    Review Simulation Results