Weather Events
Wet Weather Event Information
Wet Weather Management Totals / Blending Events
(Blended wastewater is biologically treated wastewater blended with wastewater that bypasses biological treatment units. Such discharges are approved under the bypass conditions stated in 40 C.F.R. section 122.41(m)(4) when (1) the Discharger’s peak wet weather influent flow exceeds the capacity of the biological treatment units of 2.3 MGD)
January 2023
Wet Weather Event: 1/15/2023
Amount of rain recorded: 1.85"
Blending Event Date: 1/15/2023 @ 2215 hrs - 1/16/2023 @ 1535 hrs
Blending Event Duration: 17 hrs, 20 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 0.445 MGD
Wet Weather Event: 1/14/2023
Amount of rain recorded: 1.45"
Blending Event Date: 1/14/2023 @ 0700 hrs - 1/15/2023 @ 0130 hrs
Blending Event Duration: 18 hrs, 30 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 0.503 MGD
Wet Weather Event: 1/11/2023
Amount of rain recorded: 2.05"
Blending Event Date: 1/11/2023 @ 1540 hrs - 1/12/2023 @ 0540 hrs
Blending Event Duration: 12 hrs, 0 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 0.781 MGD
Wet Weather Event: 1/9/2023
Amount of rain recorded: 2.45"
Blending Event Date: 1/9/2023 @ 0705 hrs - 1/09/2023 @ 2105 hrs
Blending Event Duration: 14 hrs, 0 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 0.884 MGD
December 2022
Wet Weather Event: 12/31/2022
Amount of rain recorded: 4.4"
Blending Event Date: 12/31/2022 @ 0743 hrs - 1/01/2023 @ 0422 hrs
Blending Event Duration: 20 hrs, 39 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 1.70 MGD
Wet Weather Event: 12/27/2022
Amount of rain recorded: 2.75"
Blending Event Date: 12/27/2022 @ 0557 hrs - 12/27/2022 @ 1505 hrs
Blending Event Duration: 9 hrs, 8 min
Blending Amount Stored: 315,249 Gal.
Blending Amount Discharged: 0.18 MG
December 2021
Wet Weather Event: 12/23/2021
Amount of rain recorded: 3.3"
Blending Event Date: 12/23/2021 @ 1315 hrs - 12/23/2021 @ 1715hrs
Blending Event Duration: 4 hrs, 0 min
Blending Amount Stored: 315,249
Blending Amount Discharged: .110MG
Wet Weather Event: 12/13/2021
Amount of rain recorded: 3.3"
Blending Event Date: 12/13/2021 @ 0924 hrs - 12/14/2021 @ 1408hrs
Blending Event Duration: 28 hrs, 44 min
Blending Amount Stored: 315,249
Blending Amount Discharged: 1.5 MG
October 2021
Wet Weather Event: 10/24/2021
Amount of rain recorded: 4.1"
Blending Event Date: 10/24/2021 @ 0640 hrs - 10/25/2021 @ 1557 hrs
Blending Event Duration: 33 hrs, 17 min
Blending Amount Stored: 315,249 (new storage capacity)
Blending Amount Discharged: 1.821 MG
March 2019
Wet Weather Event: 3/6/19
Amount of rain recorded: 1.6"
Blending Event Date: 3/6/19 @ 1100hrs - 3/6/19 @ 1412hrs
Blending Event Duration: 3hr 12min
Blending Amount Stored: 315,249
Blending Amount Discharged: 0.060 MG
February 2019
Wet Weather Event: 2/13/19-2/15/19
Amount of rain recorded: 6.6"
Blending Event Date: 2/13/19 @ 0837hrs - 2/15/19 @ 1015hrs
Blending Event Duration: 49hr 28min
Blending Amount Stored: 315,249
Blending Amount Discharged: 3.679 MG
January 2018
Wet Weather Event: 1/8/2018 - 1/9/2018
Amount of rain recorded: 4.35"
Blending Event Date: 1/8/2018 @ 1957hrs - 1/9/2018 @ 1030hrs
Blending Event Duration: 14hr 33min
Blending Amount Stored: 315,249 gallons
Blending Amount Discharged: 0.756 MGD
February 2017
Wet Weather Event: 2/20/2017 - 2/21/2017
Amount of rain recorded: 1.9"
Blending Event Date: 2/20/2017 @ 0800hrs - 2/21/2017 @1624hrs
Blending Event Duration: 32hr 24min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 1.342 MGD
Wet Weather Event: 2/9/2017
Amount of rain recorded: 1.15"
Blending Event Date: 2/9/2017 @ 1226hrs - 2/9/2017 @ 2315hrs
Blending Event Duration: 10 hr 49min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.382 MGD
Wet Weather Event: 2/8/2017
Amount of rain recorded: 0.70"
Blending Event Date: 2/8/2017 @ 0744hrs - 2/8/2017 @ 1715hrs
Blending Event Duration: 9 hr 29min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.250 MGD
Wet Weather Event: 2/7/2017
Amount of rain recorded: 2.9"
Blending Event Date: 2/7/2017 @ 0310hrs - 2/7/2017 @ 2240hrs
Blending Event Duration: 19 hr 30min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 1.446 MGD
January 2017
Wet Weather Event: 1/22/2017
Amount of rain recorded: 2.2"
Blending Event Date: 1/22/2017 @ 0823 hrs - 1/22/2017 @ 2330 hrs
Blending Event Duration: 15 hr 7 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.438 MGD
Wet Weather Event: 1/20/2017
Amount of rain recorded: 1.25"
Blending Event Date: 1/20/2017 @ 1030 hrs - 1/20/2017 @ 1230 hrs
Blending Event Duration: 2 hr 0 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.014 MGD
Wet Weather Event: 1/12/2017
Amount of rain recorded: 0.30"
Blending Event Date: 1/12/17 @ 1355 hrs - 1/12/17 @ 1455 hrs
Blending Event Duration: 1 Hr
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.006 MGD
Wet Weather Event: 1/10/17 - 1/11/17
Amount of rain recorded: 3.65"
Blending Event Date: 1/10/17 @ 0920 hrs - 1/11/17 @ 1330 hrs
Blending Event Duration: 28 Hrs 10 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 1.388 MGD
Wet Weather Event: 1/08/17 - 1/09/17
Amount of rain recorded: 2.70"
Blending Event Date: 1/08/17 @ 0900 hrs - 1/09/17 @ 1145 hrs
Blending Event Duration: 26 Hrs 45 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.570 MGD
December 2016
Wet Weather Event: 12/15/16 - 12/16/16
Amount of rain recorded: 2.25"
Blending Event Date: 12/15/16 @ 1650 hrs - 12/16/16 @ 0210 hrs
Blending Event Duration: 9 Hrs 20 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 0.466 MGD
January 2016
Wet Weather Event: 1/18/16
Amount of rain recorded: 1.8"
Blending Event Date: 1/18/16 @ 0340hrs - 1/18/16 @ 1120hrs
Blending Event Duration: 7 Hrs 40 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 46,000 gallons
Wet Weather Event: 1/6/16
Amount of rain recorded: 2.65"
Blending Event Date: 1/6/16 @ 1145hrs - 1/6/16 @ 1415hrs
Blending Event Duration: 2 Hrs 30 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 83,000 gallons
December 2014
Wet Weather Event: 12/11/14
Amount of rain recorded: 3.5"
Blending Event Date: 12/11 @ 1150hrs - 12/12 @ 1600hrs
Blending Event Duration: 28 Hrs 10 min
Blending Amount Stored: 315,249 gallons (new storage capacity)
Blending Amount Discharged: 1.672 MGD
Questions? Please Call 415-435-1501