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Vina Subbasin Stakeholder Advisory Committee
May 19, 2020 9 a.m. to Noon
parks.ca.gov wildlife.ca.gov csuchico.edu
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Vina Subbasin Stakeholder Advisory Committee 5/19/2020
May 19, 2020 9 a.m. to Noon csuchico.edu wildlife.ca.gov - - PowerPoint PPT Presentation
May 19, 2020 9 a.m. to Noon csuchico.edu wildlife.ca.gov - - PowerPoint PPT Presentation
parks.ca.gov May 19, 2020 9 a.m. to Noon csuchico.edu wildlife.ca.gov 5/19/2020 Vina Subbasin Stakeholder Advisory Committee Vina Subbasin Stakeholder Advisory 5/19/2020 Committee Vina Subbasin Stakeholder Advisory 5/19/2020 Committee
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DATE TBD Vina Subbasin Stakeholder Advisory Committee
Precipitation ET Diversions Urban Use Rimflows Qin Qin Pumping Stream-GW Interaction Interbasin Flow
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Vina Subbasin Stakeholder Advisory Committee 5/19/2020
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- Process of “turning knobs” so “observed” data better matches model
“simulated” results
- Can involve
- Refining data inputs (ex. Diversion data)
- Adjusting physical properties (ex. Hydraulic Conductivity = parameter
reflecting how well water moves through the material)
Vina Subbasin Stakeholder Advisory Committee
- Ex. Groundwater Level Data
- Ex. Calculated Groundwater
Level by the model
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Area Calibration Wells Key Wells North of Vina Subbasin 28 Vina Subbasin 86 27 Butte Subbasin 97 19 Wyandotte Creek Subbasin 18 7 South of Butte and Wyandotte Creek Subbasins 86
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DRAFT
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Multi-Completion Well: Screened 740-800 ft
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Multi-Completion Well: Screened 336-377 ft
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Vina North Management Area
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Vina Subbasin Stakeholder Advisory Committee 5/19/2020
Vina Chico Management Area
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Vina Subbasin Stakeholder Advisory Committee 5/19/2020
Vina South Management Area
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DRAFT
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Groundwater Pumping Stream Accretions Basin Boundary Subsurface Outflows Subsurface Inflows Change in Storage Groundwater System Western Boundary (net) Surface Water Outflows Change in Storage Stream Losses Deep Percolation Precipitation Evapotranspiration Surface Water Inflows Land and Surface Water System
Vina Subbasin Stakeholder Advisory Committee
(Reporting of Water Budgets in GSP Includes Additional Detail)
Inflows Outflows Exchanges Change in Storage
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Native vegetation includes grasslands and riparian.
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411 TAF/yr (26.7 in)
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363 TAF/yr (23.6 in)
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Native vegetation includes grasslands, riparian, and wetlands.
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263 TAF/yr (17.1 in)
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193 TAF/yr (12.5 in)
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20 TAF/yr
Negative values denote water moving from the groundwater system to the streams.
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Negative values denote water moving from the groundwater system to the streams. These flows may be referred to as gains or accretions. Positive values denote water moving from the streams to the groundwater system. These flows may be referred to as seepage, leakage,
- r losses.
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67 TAF/yr
Includes Foothill Area and Butte, Los Molinos, and Wyandotte Creek Subbasins
DRAFT
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- 56 TAF/yr
Negative values suggest net outflows to western boundary, which could represent Sacramento River accretions and/or flows to the Corning Subbasin.
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DRAFT
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DRAFT
Annual Groundwater Budget and Cumulative Change in Storage
Year Types: Critical (C), Dry (D), Below Normal (BN), Above Normal (AN), Wet (W) Average Decrease in GW Storage: 20 TAF/yr
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Vina Subbasin Stakeholder Advisory Committee
DRAFT
Annual Groundwater Pumping and Cumulative Change in Storage
Year Types: Critical (C), Dry (D), Below Normal (BN), Above Normal (AN), Wet (W)
Other key drivers include recharge from precipitation. Changes in storage are driven largely by drought conditions and corresponding Influences on other water budget components.
Average Decrease in GW Storage: 20 TAF/yr
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Vina Subbasin Stakeholder Advisory Committee
DRAFT Current Conditions Future Conditions
Land Use Acres Agricultural 83,276 Developed 24,819 Native 77,210 Land Use Acres Agricultural 82,766 Developed 31,459 Native 71,081
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Future Development Based on 2030 General Plan and Parcel Zoning
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Climate Scenarios in Other GSPs
2030CT – 2030 Central Tendency 2070CT – 2070 Central Tendency 2070DW – 2070 Drier with Extreme Warming 2070WW – 2070 Wetter with Moderate Warming
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Precipitation Reference Evapotranspiration
2030CT – 2030 Central Tendency 2070CT – 2070 Central Tendency 2070DW – 2070 Drier with Extreme Warming 2070WW – 2070 Wetter with Moderate Warming
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2030CT – 2030 Central Tendency 2070CT – 2070 Central Tendency 2070DW – 2070 Drier with Extreme Warming 2070WW – 2070 Wetter with Moderate Warming
50 100 150 200 250 300 350 400 Rock Creek Mud Creek Big Chico Creek Little Chico Creek Butte Creek Others
Acre-Feet (thousands)
CC 2030CT 2070CT 10 20 30 40 50 60 70 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Acre-Feet (thousands)
CC 2030CT 2070CT 5 10 15 20 25 30 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Acre-Feet (thousands)
CC 2030CT 2070CT 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Acre-Feet (thousands)
CC 2030CT 2070CT 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Acre-Feet (thousands)
CC 2030CT 2070CT 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Acre-Feet (thousands)
CC 2030CT 2070CT
Butte Creek Big Chico Creek Little Chico Creek Rock Creek Mud Creek Annual Inflows
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