MADERA COUNTY STORM WATER RESOURCE PLAN TAC Meeting #2 August 30th, 2017 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
M e e t i n g A g e n d a 10:30 Introductions (10 mins) 11:10 New Project Solicitation & Concept Development (30 mins) Meet the SWRP team and other TAC Members Receive TAC input and suggestions on project solicitation approach and identifjcation of new project concepts to 10:40 Project Prioritization Approach with develop for inclusion in the SWRP Examples (30 mins) Review the prioritization process and results for 11:40 Scheduling Future Meetings (10 mins) the fjrst 3 SWRP projects Meeting #3 In-Person: Wk of October 16 Meeting #4 Conference Call: Early November 11:50 Time for Questions http://www.maderacountywater.com/storm-water-resource-plan-swrp/
I. SWRP PROCESS: Project Prioritization Approach Project Ranking An objective method to rank project relative to a set of stormwater multi-benefjts with two components: 1. Spatial Prioritization Analysis: Identify areas of greatest stormwater/dry weather fmow impacts/potential benefjts. 2. Project Multi-Benefits Assessment Combine multiple criteria for estimating overall value from SW multi-benefjts of projects. Water Supply Water Quality Flooding Environmental Community M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
I. SWRP PROCESS: Project Prioritization Approach Metrics Criteria Quantitative measure of criteria Impacts + Potential Benefits Dry weather water use GW elevation change Water supply Subsidence GW recharge potential Modeled runoff Water quality Modeled pollutant loading Sold erodibility Length of impaired WB Impervious area Flood risk Potential flooded area M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
I. SWRP PROCESS: Project Prioritization Approach M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
I. SWRP PROCESS: Project Prioritization Approach Draft Regional Spatial Outputs Overall regional benefjt opportunity score M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
I. SWRP PROCESS: Project Prioritization Approach Initial Projects Assessment M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
I. SWRP PROCESS: Project Prioritization Approach M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
III. SWRP PROCESS: Criteria Weighting Scoring Projects Based on Weighted Criteria For each of the multi-benefjt criteria: Step #1: Determine the Project Score Project Score is a measure of how well a project satisfjes the criteria. Step #2: Project Score x Criteria Weight = Criteria Score Step #3: Sum of all Criteria Scores = Final Project Score Final Project Score is a measure of how well a project satisfjes ALL the criteria Step #4: Compare Final Project Scores of all Projects and Rank Projects M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
III. . SWRP PROCESS: Criteria Weighting Stakeholder Criteria Weighting Located in Watershed with Water Supply Impacts HIGH Water Supply Benefjts DAC Benefjts Located in a Watershed with Water Quality Impacts Water Quality Benefjts Project Development Environmental Benefjts Flood Management Benefjts Project Capital Cost Community Benefjts LOW Project Readiness M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
III. SWRP PROCESS: Criteria Weighting Input from Stakeholder Meeting #1 - July 13, 2017 Criteria Stakeholder Input Category Prioritization Criteria/Benefit Total Votes Weight risk Project Readiness 1 1% community benefits Community Benefits 2 3% project capital cost Project Capital Cost 3 4% flood management Flood Management 4 6% Environmental (Protection and 9% environmental benefits Improvement) 6 project development 1 Project Development 10% regional projects 6 water quality Water Quality 7 10% Benefit to a Disadvantaged 11% dac benefits Community (DAC) 8 appropriate allocations 1 residental project location benefits water supply 3 Water Supply 46% water supply 8 project location benefits water supply 10 groundwater recharge 10 Total 70 100% M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
III. SWRP PROCESS: Prioritization of Example Project Ex Project 1: Root Creek Avenue 10 Intentional Recharge Project Divert stormwater from a new development to a 40 ac recharge area. Att. 3.4 - 13 F igure 1-1 M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N ) - 15
III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Project Prioritization Inputs Criteria Rating Scale (1-10) Critiera Score Weight Project Task Criteria/Benefit Criteria Description Unit of Measurement (Project Score x Criteria Possible Project Criteria Weight) Proposed Number Points Score Is the project located in, and/or directly 1 Water Quality Impacts benefit a subwatershed with identified water Yes/No quality impacts? Spatial Prioritization From Watershed 31% 2.40 Analysis Modeling Analysis Is the project located in, and/or directly benefit a 2 Water Supply Impacts Yes/No subwatershed with identified water supply impacts? 3 Flood Impacts Acres Potential Flooded Area County of Madera Boundary County of Madera Boundary County of Madera Boundary HUC12 watersheds HUC12 watersheds HUC12 watersheds M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
III. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Rating Scale (1-10) Weight Project Task Criteria/Benefit Criteria Description Unit of Measurement Criteria Possible Project Proposed Number Points Score a. Support compliance with applicable permit 3 3 and/or TMDL requirements Yes/No b. Increase the filtration and/or treatment of 3 2 4 Water Quality runoff Volume Treated 5% 0.25 c. Provide nonpoint source pollution control Pollutant Load Reduction 2 0 d. Re-establish natural water drainage and Watershed - 2 0 treatment Volume Treated Based Modeling a. Water supply reliability 3 3 5 Water Supply b. Water conservation Volume Added or Saved 2 0 23% 1.37 c. Conjunctive use 3 3 a. Decrease flood risk by reducing runoff 7 7 6 Flood Management Volume Decreased 3% 0.20 rate and/or volume b. Reduce sanitary sewer 3 0 M a d e r a C o u n t y S W R P TA C M e e t i n g # 1 C o u n t y o f M a d e r a | F a l l C r e e k E n g i n e e r i n g | S i e r r a W a t e r s h e d P r o g r e s s i v e | 2 N D N AT U R E ( 2 N )
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