integration of water harvesting and gi/lid in...

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INTEGRATION OF WATER HARVESTING INTEGRATION OF WATER HARVESTING AND GI/LID IN THE AND GI/LID IN THE

CITY OF TUCSON AND PIMA COUNTYCITY OF TUCSON AND PIMA COUNTYFebruary 1, 2012

PSOMAS, Tucson, AZ

Irene Ogata, RLA, CPMUrban Landscape ManagerOffice of Conservation &

Sustainable Development

Evan Canfield, Ph.D, P.E.Chief HydrologistPima County Regional

Flood Control

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Outline: The Joint Effort

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Encourage Integrated Use ofStormwater

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Recharge vs CaptureRecharge - Infiltrate to

the regional aquifer for future use.

Capture – store for use in the near term.

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‘Harvestable’ Water (Rainwater/Stormwater) i.e. water yield

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Low Impact Development andGreen Infrastructure

EPA Green Infrastructure Homepage - Glossary

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Low Impact Development (LID)Mimic pre-development hydrology

Source: Low Impact Development Center

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Next Steps:CITY-COUNTY WATER-WASTEWATER

INFRASTRUCTURE & PLANNING STUDY

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Pima County:DETENTIONDETENTION––RETENTION MANUAL RETENTION MANUAL

(Draft)(Draft)

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85th Percentile Rainfall 0.48 inch

Replace Retention Requirement with a‘First Flush’ Retention Requirement

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Pima County:DECENTRALIZED DECENTRALIZED ‘‘FIRST FLUSHFIRST FLUSH’’ RETENTIONRETENTION

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Neighborhood-Scale Water Harvesting Manual

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City of Tucson

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City of TucsonApproved: Curb cut standards

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City of TucsonOrdinanced: Commercial Rainwater Harvesting

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Case Studies CatalogueSmall Scale: Neighborhood - scale

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Case Studies CatalogueHighland Vista Park: Collector street – residential land useNative vegetation irrigated with harvested stormwater

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Case Studies CatalogueRincon Heights: Residential collector

Photo: Watershed Management Group (WMG)

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Case StudiesWard 3: Municipal Facility – onsite capture

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Case StudiesScott Avenue: Collector street - commercial land uses

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Case StudiesCamino Campestre: Collector Street – residential/park land use

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So?

•March 2012: Regional LID Conference•Mid-2012: Draft Neighborhood Scale Water Harvesting Manual (public review by end of 2012)

•Mid- 2012: Pima County Dentention/Retention Manual for public review

•Late 2012: Draft Case Study Catalogue

CurrentCurrent Project Project TimelineTimeline::

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Resources

City-County Water Study White Paper on Stormwaterhttp://www.tucsonpimawaterstudy.com

/Reports/Phase2/Stormwater.Mgt.Tech.Paper.pdf

City of Tucson Water Harvesting Ordinancehttp://www.tucsonaz.gov/ocsd/sustainability/water/rain

waterharvesting.php

Notes on Tucson LID Workshophttp://rfcd.pima.gov/pdd/lid/

AridLIDhttp://www.aridlid.org/

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Questions

Evan Canfield: Evan Canfield: evan.canfield@rfcd.pima.govIrene Ogata: Irene Ogata: irene.ogata@tucsonaz.gov