2Year Feather River Land Trust Project BACHAND & ASSOCIATES - - PDF document

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2Year Feather River Land Trust Project BACHAND & ASSOCIATES - - PDF document

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Sierra Valley Board Presentation 3/18/2019 Advancing Groundwater Sustainability in Sierra Valley: Key Messages from the Sierra Valley Groundwater Study and the GSP Planning Grant Effort P.A.M. Bachand, Ph.D. 1 ; S.M. Bachand, MS, ME, PE 1 ; K.

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 1

Advancing Groundwater Sustainability in Sierra Valley: Key Messages from the Sierra Valley Groundwater Study and the GSP Planning Grant Effort

P.A.M. Bachand, Ph.D.1; S.M. Bachand, MS, ME, PE1; K. Burt1 and S. Carlton, PG, CHG2

1Bachand & Associates 2Carlton Hydrology

Sierra Valley Groundwater Management District Board Meeting Monday, Mar 18, 2019 at 6:00 pm Golden West Restaurant, Loyalton, CA

B A C H A N D & A S S O C I A T E S

Sustainable Water Resources

2‐Year Feather River Land Trust Project

Goal and Partners

  • Goals
  • Promoting groundwater sustainability

in Sierra Valley through better understanding groundwater conditions and considering potential solutions

  • Project Partners and Collaborators
  • Helen Dahlke, UC Davis
  • Thomas Getts, UC Cooperative

Extension Plumas – Sierra County

  • Kristi Jamason

Project

  • Groundwater Study
  • Irrigation efficiency study
  • Groundwater Sustainability

Plan (GSP) Planning Grant

BACHAND & ASSOCIATES

Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 2

Presentation Outline

  • Groundwater Report Highlights
  • Sustainable Groundwater

Management Act (SGMA) Considerations

  • Groundwater Sustainability Plan

(GSP) and Planning Grant

BACHAND & ASSOCIATES

Sustainable Water Resources

Groundwater Report Highlights

  • Results
  • Data Gaps and Uncertainty

BACHAND & ASSOCIATES

Sustainable Water Resources

BACHAND & ASSOCIATES

Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 3

Shallow Groundwater (GW) Levels (Spring 2015) and Pumping, 1998 ‐ 2016

GVW GVE

Total Pumping, 1998 – 2016

Notes: 1. GV = Grizzly Valley Fault 2. Arrows show direction of groundwater flow 3. GW contours estimated from well data based on fitting algorithms

Circles show amount of pumping by Township Section

BACHAND & ASSOCIATES

Sustainable Water Resources

Shallow and Deep Groundwater (GW) Response to Groundwater Pumping by Township Section, 1998 ‐ 2016

A) Shallow Groundwater Levels (Spring 2015) B) Deep Groundwater Levels (Spring 2015)

  • Deep GW most

affected by pumping

  • Static GW level in

deep wells below static GW levels in shallow wells

  • GW depression

represents cumulative response to GW pumping and flow dynamics

  • Most pumping east
  • f GVW

GVW GVE

Total Pumping, 1998 – 2016

BACHAND & ASSOCIATES

Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 4

Decline in deep groundwater from 1980 to 2015 (Spring Measurements)

BACHAND & ASSOCIATES

Sustainable Water Resources

Recharge Response Deep GW from 2017 Wet Year

BACHAND & ASSOCIATES

Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 5

Sustainable Yield Estimates (1989 – 2017) – Groundwater Pumping Rates during Years with Declining, Stable and Increasing Groundwater Levels

Declining GW > - 2ft Stable GW +/- 2 ft Increasing GW > + 2 ft Annual GW Change (ft/year) 2000 3000 4000 5000 6000 7000 8000 GW Pumping (ac-ft/yr)

6,447 5,972 3,941

Median 25%-75%

Groundwater Pumping (Acre‐Ft/Year)

BACHAND & ASSOCIATES

Sustainable Water Resources

Sources of Current and Future Uncertainty

  • Geologic, e.g.,
  • Flow paths and flow timing to aquifer
  • Basin stratigraphy and sediment deposition
  • Characterization of basin faults
  • Hydrology; e.g.,
  • Evapotranspiration (e.g. basin, forests) and effects of climate change and

future management

  • Recharge rates and effects of climate change on precipitation, effects of future

upland and lowland management, and opportunities from reservoir re‐

  • peration
  • Current and future rainfall and snowfall spatial distribution
  • Limited set of monitoring wells
  • Pumping record data (e.g. completeness, accuracy, QAQC)

BACHAND & ASSOCIATES

Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 6

Uncertainty Example

Well Selection and Density Effects on Data Interpretation and Decision Making

SVGMD Wells CASGEM Well Subset used in GW report

  • Affects predicted groundwater elevations using

contouring programs

  • Affects adaptive management decisions with

increased uncertainty about cause (e.g. pumping rates) and effect (i.e., resulting groundwater elevation changes)

Uncertainty Example

Climate Change Considerations

  • Affects estimates of

precipitation amount and type due to upward migration

  • f snowline
  • Greater uncertainty north
  • f Tahoe
  • Affects estimates of

precipitation frequency within seasons and through years

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 7

Uncertainty and Adaptive Management

  • Total Sierra Valley Water Budget approximately 250,000 AF annually
  • Sustainable Yield in the 5000 – 6500 AF range in Eastern Valley
  • 2 ‐ 3% error in Water budget equivalent to total Sustainable Yield
  • Water budget error likely around 10 – 30% due to propagation of error in

calculations

  • Best solution to act on direct measures (e.g. groundwater levels,

subsidence, water quality)

  • Better data –
  • Constrains effects spatially and temporally
  • Informs on strategies and actions for adaptive management

BACHAND & ASSOCIATES

Sustainable Water Resources

Key SGMA Considerations

  • Undesirable Results
  • Process and Timeline
  • State Water Board Intervention

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 8

Achieving Sustainable Yield and Avoidance of Undesirable Results (DWR 2017)

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Lowering of GW Levels Reduction

  • f GW Storage

Seawater Intrusion Water Quality Degradation Land Subsidence Depletionof Interconnected Streams

BACHAND & ASSOCIATES

Sustainable Water Resources

Achieving Sustainable Yield and Avoidance of Undesirable Results (DWR 2017)

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Lowering of GW Levels Reduction

  • f GW Storage

Seawater Intrusion Water Quality Degradation Land Subsidence Depletionof Interconnected Streams Needs sufficient density to characterize groundwater and inform

  • n adaptive actions

The amount of usable water that remains in an aquifer depends on soil texture, stratigraphy and groundwater levels. A well designed network should be established in areas where subsidence conditions are or believed to be

  • ccurring.
  • Is GW pumping causing

GW contaminants to migrate.

  • Sufficient to assess

impacts to beneficial uses and users, and to evaluate management. Commonly refers to stream and shallow groundwater

  • interactions. Artesian

wells likely will be considered if linked to groundwater declines.

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 9

SGMA Process and Timeline

Phase 1:

GSA Formation and Coordination

2014 – 2017

Phase 2: GSP Preparation and Submission

  • DWR funding, facilitation

and technical support

  • GSP development
  • GSP define thresholds,

triggers, projects and management actions

  • GSP January 2022

submittal 2017 – 2022

Phase 3: GSP Review and Evaluation

  • 2‐year initial review

period

  • Corrective actions
  • Inadequate GSP leads

to intervention 2022 ‐ 2025

Phase 4: Implementation and Reporting

  • Annual Reporting
  • GSP 5‐year assessments

and re‐evaluation:

  • Alternatives

resubmitted

  • Interim milestones
  • GW Sustainability

2022 ‐ 2042

BACHAND & ASSOCIATES

Sustainable Water Resources

State Water Board (Board) Intervention

Local Agency Qualification

  • Qualifies as probationary:
  • fails to form a GSA,
  • fails to develop an adequate sustainability plan,
  • fails successfully implement plan.
  • When Board designates a basin probationary
  • All extractors must file extraction reports

(unless specifically excluded by the Board).

  • May require meters to measure extractions
  • May require additional reporting

Interventions

  • Board will allow agencies time to correct

issues that led to probation

  • Board will develop an interim plan if local

agencies cannot fix the issues, which will include –

  • directly manage groundwater extractions,
  • contain corrective actions,
  • Contain timeline to basin sustainability
  • Contain a monitoring plan to validate

effectiveness of actions

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 10

Example: Annual fee for rancher with one well irrigation 160 acres with 320 ac‐ft of groundwater per year

Base Filing Fee ($300) Probationary Basin Annual Fee $40/acre‐ft $12,800 ($80/acre) Interim Basin Annual Fee $55/acre‐ft $17,600 ($110/acre) Total: $13,100 Monthly Late Fee (25%): $3,275 Total: $17,900 Monthly Late Fee (25%): $4,475 OR

+ +

BACHAND & ASSOCIATES

Sustainable Water Resources

Groundwater Sustainability Plans (GSP) and GSP Planning Grant

  • General Grant Information
  • Expected Cost Share

Requirements

  • Moving Forward

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 11

2017 GSP Grant Example Applications

Category 2 Projects (GSP Development)

Budget Component Big Valley Tulelake Siskiyou County Colusa

EDA/DAC/SDAC SDAC SDAC SDAC EDA Basin Priority Medium Medium Medium Medium Cost Share Required by Proposal 0% 0% 0% 0% Project Cost $1,045,541 $836,800 $1,614,000 $1,497,400 Amount Requested $999,185 $721,120 $1,367,000 $1,000,000 Amount Awarded $999,185 $721,120 $1,367,000 $1,000,000 Local Contribution Provided 4% 14% 15% 25% GSP Prep & Writing $143,076 $298,000 $276,000 $293,220 Public / Stakeholder Engagement $130,853 $84,000 $75,000 $63,840 Data & model development $531,816 $405,000 $1,263,000 $761,180

BACHAND & ASSOCIATES

Sustainable Water Resources

Phase 1:

GSA Formation and Coordination

2014 – 2017

Phase 2: GSP Preparation and Submission

  • DWR funding, facilitation

and technical support

  • GSP development
  • GSP define thresholds,

triggers, projects and management actions

  • GSP January 2022

submittal 2017 – 2022

Phase 3: GSP Review and Evaluation

  • 2‐year initial review

period

  • Corrective actions
  • Inadequate GSP leads

to intervention 2022 ‐ 2025

Phase 4: Implementation and Reporting

  • Annual Reporting
  • GSP 5‐year assessments

and re‐evaluation:

  • Alternatives

resubmitted

  • Interim milestones
  • GW Sustainability

2022 ‐ 2042

Planning Grant providing funding to :

  • develop an approach,
  • determine data gaps,
  • implement supporting projects and
  • develop a sustainability strategy during the Phase 2

process.

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 12

Example Planning Grant Proposed Activities: e.g.,

  • Groundwater Sustainability Plan
  • Monitoring network development (e.g. subsidence, groundwater

level)

  • Data collection (e.g. water quality, subsidence, groundwater level)
  • Vulnerability assessment and identification of data gaps
  • Public / Stakeholder engagement
  • Pilot studies

BACHAND & ASSOCIATES

Sustainable Water Resources

Considering Management Areas (MAs) under GSP strategy

  • Fault effects on groundwater

table, response to funding and potential management

  • Manageable number
  • Incorporate West – East

climate gradient

MA MA MA MA MA MA

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 13

Current Expectations for Prop 68 Planning Grant*

*could be adjusted in response to public comment

  • Planning Grant Purpose
  • Category 1: projects to help implement GSP
  • Category 2: GSP planning, development and preparation
  • Expected Timeline
  • Draft Solicitation – Late March or Early April
  • 60 day Public Comment
  • Final Solicitation – Late June / Early July
  • Application Due – Late August / Early Sept?
  • $48M in funding
  • Approximately 40 new applicants eligible for funding
  • New applicants will be priority
  • Awards expected to range from $0.4M – $1M per project

Match Required %EDA or DAC by population or by geographic area 25% <50% in basin 10% 51 – 71% in basin 0% >76% in basin Analyzed Sierra Valley with DWR tools and checked with DWR:

  • Area appears eligible for $Total Cost

Share Waiver (0$)

  • Documentation required

Planning Grant Application Organization

Bachand & Associates (BA)

Lead Development

  • f Planning Grant

GSP Planning Group Board and Plumas Co Planning Grant Subcommittee

  • Inputs
  • Review and Edits
  • Higher Level Review and

Input to Planning Grant.

  • Facilitate

Communications and Approvals with the Board and Plumas Co.

Sierra Valley Groundwater Management District Plumas Co.

  • Updates
  • Approvals
  • Planning Grant

Support

  • Resolutions

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Sustainable Water Resources

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Sierra Valley Board Presentation 3/18/2019 Philip Bachand, Bachand & Associates, philip@bachandassociates.com 14

2019 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2020 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2021 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2022 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Example Planning Grant and GSP Timeline

BA Developing Planned Tasks and Budgets with input from Board, Plumas Co., GSP Planning Group and technical experts BA provides Public Comment on draft solicitation BA Develop Planning Grant Application for Board / Plumas Planning Grant Award by DWR GSP Due to DWR Planning Grant Contracting by DWR Board/Plumas: RFP and Bidding Documents Board / Plumas: Solicit Bids for GSP Project. Board / Plumas: Select Team & Contract Teams Submit Proposals Selected Team(s) Develop GSP and Conduct Related Projects with review by Board and Plumas Co. Selected Team(s) Develop GSP and Conduct Related Projects with review by Board and Plumas Co. Form Board Subcom.

BACHAND & ASSOCIATES

Sustainable Water Resources

Questions?

BACHAND & ASSOCIATES

Sustainable Water Resources

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