The Treasure Valley Population expected to increase from 625k in 2015 to 1.57 million in 2065 Households expected to increase by 280% - from 226,600 to 638,700 Average temperatures could increase by 1.9 to 6.1 degrees (increasing evapotranspiration by 5- 20% Increase of 109,000 to 188,000 AF/year by 2065 The fasted growing area of the state Population more than double in the next 50-years Warmer temperatures expected Increase of 109k to 188k af in next 50-years Treasure Valley DCMI Water-Demand Projections (2015 – 2065) – SPF Water Engineering, 2016 (Terry Scanlan & Christian Petrich)

Elmore County Water-level declines of 100-200 feet since the 1960’s Current decline of 5-feet per year in areas Annual pumping deficits of 43,000 AF/year West of Boise Aquifer in steep decline 43,000 deficit / year and getting worse Elmore County Water Supply Alternatives Study – SPF Water Engineering, 2017 (Terry Scanlan)

Rathdrum Prairie Aquifer Anticipated population growth of 88,000 by 2045 Maximum daily demand will increase by 61.56 cfs; and the peak hourly demand will increase by 159.41 cfs by 2045 North Idaho: Coeur d’Alene, Post Falls, Hayden, Rathrum, etc. Significant growth and expanded water needs into the future Rathdrum Prairie Integrated Water Resource Management Report – Idaho Water Resource Research Institute, 2015 (Mark Solomon)

Palouse Aquifer (Idaho) 4,874 af/year increase in demand by 2065 2,256 af/year required to stabilize the aquifer Moscow, Idaho and Pullman, Washington area Aquifer needs stabilized – both Idaho and Washington communities are working to develop a plan to address water needs

Idaho Infrastructure Work Group

Meetings in D.C. Idaho needs to get on the same page! Dr. Tim Petty, Assistant Secretary over Water & Science, U.S. Department of the Interior. Don’t come to me with different, conflicting demands for federal partnership opportunities. Form a coalition. Senator James Risch, Idaho (R) Meetings in D.C. We have seen time and time again that collaboration and coalition building leads to the highest opportunity for success Idaho water users recognize need for infrastructure to address different issues throughout the State BUT, different water users have their different “pet projects” and would advocate for those Need to form a Coalition speaking with one voice

Idaho Water Infrastructure Work Group Speaker of the House Chairs of the House & Senate Resource Committees Director, Idaho Department of Water Resources 3 Members (including chair) of Idaho Water Resource Board Stakeholders from throughout Idaho

Original Purpose of Work Group Develop opportunities for federal, state and private partnerships to fund new storage projects in Idaho.

Broadening the Scope Realize the need for stakeholders to speak with one voice on other infrastructure-related issues throughout the state. Not just about $$. Coalition of diverse users have broader political influence to remove regulatory impediments to getting projects done.

Revised Purpose of Work Group Develop and advocate for water supply projects in Idaho through federal, state and private funding partnerships and/or the removal of regulatory hurdles.

Funding & The Removal of Regulatory Hurdles

Federal Funding: WIIN Act Creates fund managed by Reclamation for infrastructure projects Streamlines processes Up to 50% federal funding Reclamation prioritizes projects based on several factors (including cost/benefit analysis) List presented to Congress to identify in legislation (any legislation) After 2019 Omnibus, over $300 million in WIIN Act fund Federal Funding: WIIN Act This is a great act! Streamlines the processes to obtain approval and funding Federal funding is based on federal benefit received from a project

Federal Funding: WaterSMART Smaller projects Broad range of grants Up to 50% cost-share Types: Water and Energy Efficiency Grants Small-Scale Water Efficiency Project Grants Cooperative Watershed Management Program Drought Program Federal Funding: WaterSMART

State Contributions Working with Governor’s office and Legislature to create a fund State partnership on large and small projects Incremental development (long- term savings plan) Working to create a fund and an avenue for state partnerships on projects

Regulatory Hurdles Title Transfer Greater flexibility with facilities Access to prime recharge locations Recharge over Federal Lands Better management of water resources Flood Control Rule Curves Regulatory Hurdles Title transfer allow for greater flexibility in operation of system – i.e. ability recharge through system In Idaho, some of the best recharge locations are on federal land – authorization processes can be quite cumbersome. Working to streamline authority to recharge on federal land through legislation, including the Reclamation Title Revise flood control curves may allow for better management of water resources.

Developing a List

List Categories New / Enlarged Surface Storage Re-Purpose of Existing Surface Storage ESPA Managed Recharge Projects Ground Water Sustainability Projects Small, multi-purpose projects

Anderson Ranch Dam Approved for WIIN Act funding Feasibility / NEPA done by early 2021 Construction begin in 2021 28,000 a/f increase Approx. $40m For new / enlarged storage, we prioritized our list. Anderson Ranch was 1st priority due to WIIN Act funding

Island Park Reservoir Eastern Idaho 12,000-30,000 a/f increase Inexpensive to construct (bladder) Expensive to mitigate (easements)

Minidoka Dam South-central Idaho $250m total cost 50,000 a/f increase Mitigation: freeway & wildlife refuge About 1 mile of freeway would have to be raised

Other Storage Projects Galloway Dam (800,000 a/f) Weiser River Lost Valley Dam Raise (10,000-30,000 a/f increase) Weiser River Basin headwaters Caribou Dam (40,000 a/f) Bear River Each of these have been on Idaho’s radar for many years Have not advanced for many reasons – environmental being the priority reason

Re-Purpose Existing Storage Ririe Reservoir Relaxing flood control rule curves Bear Lake Reduce fall drawdown Maximize storage Bear Lake: Power company draws lake down in fall. Working to acquire water rights and authorizations necessary to minimize drawdown

Recharge Projects Roberts Pipeline $108m Deliver water from Snake River to Mud Lake area for recharge Prosperity Canal (aka “Canal to Nowhere”) Large managed recharge facility Deliver water into desert for recharge Longer retention time

Sustainability Projects Mountain Home (Elmore County) Pipeline from Snake River to Air Force Base $70m Palouse Basin / Moscow, ID Pump water to basin to satisfy existing and future needs Working on concepts / plans

Small Multi-Purpose Projects In-canal projects with multiple purposes Regulating reservoirs; Water quality; Sediment control; Flood control Usually less than $1,500,000