l.,,.l DENVER COMMUNITY MEETING: ROUND 3 10 resiliency planning Iupper montclair education J stormwater Ill' PUBLIC WORKS Planning Design»Action
TONIGHT'S AGENDA 10 resiliency planning Iupper montclair education...,/ stormwater 1. Why are we studying Hale Parkway & Severn? 2. Draft Community Goals 3. Hale Pkwy: Approaches to Meeting our Goals 4. Discussion Groups
STUDY AREA 10 resiliency plann!ng Iupper montclair education.,/ stormwater LOWE PARKHILL MONTCLAIR BASIN :-: Ill a. LI.I 0 V BA IN CITY PARK V 1:10 c( LI.I z ::, 17THAVE COLFAX AVE STAPLETON ; I- GREENWAY 0 :e 0' ) CHEESMAN PARK 0 ~ 1:10 g ~ 0... 8 6THAVEPKWY CRESTMOOR PARK ALAMEDA AVE FAIRMOUNT CEMETARY
SIGNIFICANT FLOODING LOCATIONS 10 resiliency planning Iupper montclair education.,/ stormwater STAPLETON GREENWAY CHEESMAN PARK CITY PARK m 0 cc a:: 17THAVE **~ i,_.,...,...,,..,..,..._.,. COLFA,1<111/E **t* 1 :. * o * *** * ~ ** ** * 4t * 0... 6THAVEPKWY 0 V ~ CRESTMOOR PARK ) ALAMEDA AVE * FAIRMOUNT CEMETARY Significant Flooding Locations Denver PW COMMUNITY REPORTS *
PHOTOS 10 resiliency planning Iupper montclair education.,/ stormwater June 24, 2015 - Denver PW 14TH & KRAMERIA
10 resiliency planning Iupper montclair education.,/ stormwater RE-THINKING OUR APPROACH Resiliency Planning, Education and Outreach e
TYPICAL APPROACH 10 resiliency planning Iupper montclair education...,/ stormwater
COLLABORATIVE APPR 10 resiliency planning Iupper montclair education.,/ stormwater GREV INFRASTRUCTURE PLANNING& URBAN DESIGN
BE RESILIENT 10 resiliency planning Iupper montclair education...,/ stormwater STORM WATER BENEFIT Ability of communities to rebound, adapt to or thrive amidst changing conditions and challenges- Colorado Resiliency Framework, 2015
TOPOGRAPV AND WATER FLOW 10 resiliency planning Iupper montclair education.,/ stormwater COLFAXAVE ELEVATION: LOW
I I\ 7 ' L. J i..' ~. ::.di ",/... - / ~ lo.~.. ) ~ l '----,.. \ I 7 l UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES 'L I \ri a I I j ~ l.. I \ r ~.J l,- L---... \.. ~ -,. )... ' I.._/ ---..-... V
I.. ) /,/ J.. 2.9% SIDEWALKS 113 ACRES I \.. ).. '..
I.. ) /,/ J.. UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES ).. ~ 3.S% 2.9% DRIVEWAYS SIDEWALKS 139 ACRES 113 ACRES
I.. ) /,/ J.. UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES 3.9% SURFACE PARKING 149 ACRES 3.S% DRIVEWAYS 139 ACRES 2.9% SIDEWALKS 113 ACRES ).. ~
I.. ) /,/ J.. UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES 19.0% STREETS & ALLEYS 726 ACRES 3.9% SURFACE PARKING 149 ACRES 3.S% DRIVEWAYS 139 ACRES I... ' 2.9% SIDEWALKS 113 ACRES
I.. ) /,/ J.. UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES 19.8% ROOFTOPS 752 ACRES 19.0% STREETS & ALLEYS 726 ACRES 3.9% SURFACE PARKING 149 ACRES 3.S% DRIVEWAYS 139 ACRES 2.9% SIDEWALKS 113 ACRES I... '
. '...,. ; I.. -.. :"\)_...(.. :,. I... "{-4 ' i I 1 J ~j=',.-l 1-.,: J -... -! /.:1:.- 11 ra.. I :: : -t-. ;., I ),/.. UPPER MONTCLAIR BASIN IMPERVIOUS SURFACES 19.8% ROOFTOPS 752 ACRES 19.0% STREETS & ALLEYS 726 ACRES 3.9% SURFACE PARKING 149 ACRES 3.S% DRIVEWAYS 139 ACRES 2.9% SIDEWALKS 113 ACRES I... '
Denver s Green Infrastructure Program East Area Plan Steering Committee August 23, 2017 l ~t DENVER a, PUBLIC WORKS
10 resiliency planning Iupper montclair education...,/ stormwater
10 resiliency planning I upper montclair education...,/ stormwater The Problem Over 1200 Total Outfalls 300+ Outfalls into Cherry Creek 300+ Outfalls into South Platte 13% of Denver s 98,900+ acres receive water quality treatment 2013 Matrix Report Denver s Streams: 0/10 meet recreation standards 7/10 suitable for aquatic life 2016 Water Quality Report, Denver Dept. of Environmental Health
10 resiliency planning I upper montclair education...,/ stormwater More Density = More Impervious Area Photo Source: Denver Post, 3/21/15 47% of Denver* is currently covered in impervious surfaces Source: DRCOG LiDAR Data 57% of Denver* is projected to have impervious cover by 2020 based on future land use Source: CCD Drainage Master Plan, 2014 Projected land-use change on Blueprint Denver, 2002
10 resiliency planning I upper montclair education...,/ stormwater Current and Changing Regulations CURRENT: Dry Weather 6 (of original 11) outfalls out of compliance for dry weather discharges of E.coli 2020 to correct CURRENT REGULATIONS FUTURE: Dry + Wet Weather CCD would not meet anticipated new standards with existing conditions E.coli & Nutrients Potential for 1200 outfalls vs 11 Could begin as early as 2018 FUTURE REGULATIONS Dry weather discharges Wet weather discharges
10 resiliency planning I upper montclair education...,/ stormwater Green Infrastructure Planning Objectives 1. Data Driven: Prioritize basins with greatest WQ needs based on data 2. Strategic Prioritization: Identify large & site-scale GI projects by using Scorecard criteria 3. Proactive: Address wet and dry weather discharges 4. Meet Multiple City Goals: Work with other city agencies to maximize collaboration opportunities & OPM Primary Category Existing TMDL 303(d) listed waterbody Wet weather pollutant loading Dry weather pollutant loading Is drainage basin directly to the SPR & existing TMDL (126 cfu/ml) Does drainage basin contain a water body listed on the 303(d) list (impaired waterway) Average annual pollutant load per land use for wet weather Average annual dry weather pollutant load per area Disconnected Impervious Area Redevelopment Potential Impervious Area within the ROW Existing Treatment Density of storm drain network (higher indicates greater need for WQ) Per Blueprint (new development over 1 acre requires WQ) Amount of ROW divided by total basin area (streets largest contributor of pollutants) Amount of treatment expected by existing WQ facilities Secondary Category Park Density Economics Green-ness Heat Island Effect Transportation Pollutant Index Ratio of park per 10,000 persons % of persons in low to moderate income level (HUD defined) Ratio of total tree canopy coverage divided by basin area Measure of heat energy absorbed by urban materials Total vehicle miles traveled
10 resiliency planning I upper montclair education...,/ stormwater Opportunity Types: Sub/Regional Scale Projects Parcels Treat large tributary areas Site-Scale Projects Right-of-Way/Streets Local treatment City Owned Parcels High Opportunity Park Medium Opportunity Park High Opportunity Green Street Green Infrastructure Planning Medium Opportunity Green Street
10 resiliency planning I upper montclair education...,/ stormwater Sub/Regional Scale Projects Site-Scale Projects
10 resiliency planning I upper montclair education...,/ stormwater Benefits of Green Infrastructure Improve water quality Reduce flood risks Reduce Urban Heat Island effect Improve air quality Absorb local carbon emissions Improve public health outcomes Increase physical activity Improve mental wellbeing Reduce stress Lower traffic speeds and reduce injury crashes Improve property values
10 resiliency planning I upper montclair education...,/ stormwater Questions? Ashlee Grace Water Quality Planner Policy, Planning and Sustainability Public Works City and County of Denver ashlee.grace@denvergov.org 720.865.3131
WHAT DO WE DO? 10 resiliency planning Iupper montclair education..)_ stormwater outreach systems st udy
PUBLIC MEETINGS 10 resiliency planning Iupper montclair education.,/ stormwater MONTVIEW PALMER THE PRESBYTERIAN ELEMENTARY ART GYM FEBRUARY23 MARCH2 MARCH3 e
HALEPARKWa COMMUNITY PRIO - PRIORITY TOPIC COUNT Preserve Lindsley Park 25 Preserve Existing Trees 22 Passive Green Space 19 Family Friendly 12 Pedestrian Trails 11 Sidewalk Environment 10 Connectivity 9 Protected Bike Facility 8 Water Quality 6 Active Recreation 5 Transportation Facilities 4 On-Street Parking 2 PERCENT 19% 17% 14% 9% 8% 8% 7% 6% 5% 4% 3% 2% e
DRAFT COMMUNITY GOALS 10 resiliency planning I upper montclair education...,/ stormwater PRIMARY GOALS ALLEVIATE FLOODING IMPROVE WATER QUALITY Per Outfall Systems Master Plan
DRAFT COMPLEMENTARY GOALS '""''"",~:i1~;ioi~::=::: ;, Q SEEK SOLUTIONS WITH MULTIPLE 'O COMMUNITY BENEFITS ~ IMPROVE & PRESERVE ~ NEIGHBORHOODGREEN SPACE @ MAINTAIN TREE CANOPY ALONG HALE INCREASE PEDESTRIAN & BIKE CONNECTIVITY MANAGE FUTURE TRAFFIC ON HALE (AND SURROUNDING STREETS)
10 resiliency planning Iupper montclair education...,/ stormwater Tonight's Meeting The Hale and Severn Story
100 VEAR DESIGN FLOW 10 resiliency planning Iupper montclair education...,/ stormwater Elevation t 5300ft N 5350ft
PHOTOS 10 resiliency planning Iupper montclair education.,/ stormwater June 24, 2015 - Denver PW SEVERN &JERSEY
HALE & SEVERN CONNECTION 10 resiliency planning Iupper montclair education...,/ stormwater
HALE PARKWAY - TODAY'S CONDITION 10 resiliency planning Iupper montclair education...,/ stormwater I I s- I.-II05 Mml'.Al saw.we 10' 11' tr TVR#I.AN OIW 1.AN P-IIG DIW 1.AN +--------------------------- cv roa,a no ------------------------+! IIOW,lSO' POTABlfWAlHM SAINTARYWAm!MA#I OIAM,27' 11/C STOIIMWAT R.MN
Discussion Groups: Spectrum ofapproaches resiliency planning 10Iupper montclair education...,/ stormwater GRAY GREEN 70' 0" DISCHARGE DURING 100 YEAR FLOOD EVENT (650 CFSJ All Pipe Approach Hybrid Approach- Part All Channel Approach pipe and part channel
10 resiliency planning I upper montclair education...,/ stormwater Community Goals/ Values We are here Agreement on Approach to Hale (Spectrum of Options} i Alternative Concept Designs for Desired Approach
THANK YOU! 10 resiliency planning Iupper montclair education.,/ stormwater ov It DENVER THE MILE HIGH CITY Beth Vogelsang, AICP beth@ovllc.com 303-589-5651 Mike Anderson, PE mike.anderson@denvergov.org 720-865-3023 STUDY WEBSITE: denvergov.org/u ppermontclai rbasin