K Street, Sacramento – 1861/1862 Flood Environmental Commission February 2018

Responsibilities Capital Improvement Projects SAFCA Mitigation and other property management Land Use and Floodplain Managers Cities and Counties Levee Maintenance American River Flood Control District Reclamation District No. 1000 State of California Maintenance Area 9 City of Sacramento SAFCA (Fund others to perform maintenance as new capital projects incorporated into the system)

Levee Maintaining Agencies

Sacramento River Flood Control System Sacramento most at-risk city in America for riverine flooding Confluence of two major rivers (American and Sacramento Rivers) Over half million people in the floodplain About $70 billion in damageable property Deep flooding, cold water

Water temperature when Katrina hit was 82o F Water temperature American River during 1986 flood event – approximately 48o F Adults dressed in average clothing Hypothermia Remain conscious 1 hour in 40o F water 2-3 hours in 50o F water Swimming or struggling in the water Increases heat loss Reduces survival time to minutes

Consequences of Flooding in Sacramento Over half million people in the floodplain Deep flooding, cold water Retain consciousness 1 – 3 hours Corps estimates 1,800 deaths Over 147,000 structures damaged About $70 billion in damageable property

Regulatory Requirements FEMA 100-Year Accreditation Natomas remapped into the 100-year floodplain in 2008 Corps withdrew certification for all Sacramento levees August 2013 State of California Certification Communities had to certify they have a plan to safely handle a State defined 200-year hydrograph by July 2016 Communities need to have this protection in place by 2025

Our Levee System System Folsom Dam and Reservoir on American River 106 miles of levees and channels Sacramento Weir and Bypass Yolo Bypass Our Levee System SAFCA Jurisdiction

Yolo and Sacramento Bypasses 1979 Flood Event

Federal Flood Control Project Cost Share Federal Government 65% State Government 24.5% Local Government 10.5% Note: Cost share varies depending on LERRD’s State/SAFCA cost share set at 70/30 per SB 276 (2007)

AMERICAN RIVER WATERSHED FOLSOM DAM RAISE (Authorized 2004) AMERICAN RIVER WATERSHED COMMON FEATURES – NATOMAS BASIN (Authorized – 2014) AMERICAN RIVER WATERSHED FOLSOM DAM JOINT FEDERAL PROJECT (Authorized 1999) AMERICAN RIVER WATERSHED COMMON FEATURES – AMERICAN RIVER (Authorized – 1996/1999) AMERICAN RIVER WATERSHED COMMON FEATURES – GENERAL REEVALUATION REPORT (Authorized – 2016) SOUTH SACRAMENTO STREAMS (Authorized – 1999)

Ongoing Federal/State/SAFCA Projects Phase   Current Estimate American River Watershed Common Features American River Construction Close-out $320,000,000 Natomas Basin Design/Construction $1,200,000,000 General Re-evaluation Report Authorized Awaiting Design Appropriations $1,590,000,000 Folsom Dam Modifications Joint Federal Project $850,000,000 Folsom Dam Raise and Bridge $325,000,000 South Sacramento Streams Group $110,000,000 TOTAL $4,395,000,000

Rebuild Folsom Dam New Dam and Spillway Raise Dam 15

Historic American River Flows

Rebuild Levee System

Through Seepage and Under-Seepage Levee Seepage Through Seepage and Under-Seepage 1997 Central Valley Flood More than 40 levee failures 35 from geotechnical failures Post-Katrina Analyzed past 100 levee failures across the country 80% Seepage Half through seepage Half under-seepage Result – New Federal and State Standards for Urban Levees Addressing Seepage

Seepage Cutoff Wall

Erosion Site 1986 Flood Event Erosion Protection Recommended plan includes erosion protection in critical areas to prevent this from happening Erosion Site 1986 Flood Event Since water was high on the levee, erosion could not be seen until water receded Same site after erosion protection similar to that included in recommended plan

1968 1986

June 2000 August 2004 Erosion Protection July 2007

Our Levee System SAFCA Jurisdiction

Widen Sacramento Weir and Bypass

Construction Status as of February 2018 Green Line Means Essentially Completed Yellow Line Means to be Constructed Red Dashed Line Means Under Construction

After Currently Authorized Projects Completed

Challenges to Advancing Flood-Risk Reduction Contractor Protests Have delayed flood risk reduction by over a year Have hurt our ability to get additional Federal funding Could result in less projects for Contractors to bid on

Challenges to Advancing Flood-Risk Reduction State of California Funding Proposition 1e funding fully allocated Since the Prop 1e was allocated SAFCA has $2.8 billion in new projects moving forward at Federal level No source of State funding to match

Challenges to Advancing Flood-Risk Reduction Federal Process and Funding Proposed Infrastructure package $1.5 trillion total $200 billion Federal Proposed 13.3% Federal cost share versus current 65% for flood-risk reduction projects Does not fit P3 model Flood-risk reduction projects have no product to monetize

Challenges to Advancing Flood-Risk Reduction President’s Proposed FY 2019 budget significantly reduces Corps of Engineers construction funding Total Corps Construction funding (not including Mississippi River which has separate funding pot) Pres Proposed FY 2019 - $872 million Pres Proposed FY 2018 - $1.02 billion House Bill FY 2018 - $1.3695 billion Senate Bill FY 2018 - $1.295 billion

April 14, 2015

Nutria

To date, nutria have been found in wetlands, rivers, canals and other freshwater habitat in Merced, Fresno and Stanislaus counties. If allowed to establish, nutria will severely impact California’s resources, causing the loss of wetlands, severe soil erosion, damage to agricultural crops and levees and reduced stability of banks, dikes and roadbeds, as they have done in Louisiana, Chesapeake Bay and the Pacific Northwest.

Nutria also degrade water quality and contaminate drinking supplies with parasites and diseases transmissible to humans, livestock and pets. Native to South America, nutria are large, semi-aquatic rodents that reach up to 2.5 feet in body length, 12-inch tail length and 20 pounds in weight. Nutria strongly resemble native beaver and muskrat, but are distinguished by their round, sparsely haired tails and white whiskers up to 60 pounds.

Since March 30, 2017, more than 20 nutria, including males, pregnant females and juveniles, have been documented in the San Joaquin Valley. The full extent of the infestation is not yet known.