Citation
Rainwater Harvesting on the Auraria Campus: A Way to Prepare for Water Shortages Due to a Changing Climate

Material Information

Title:
Rainwater Harvesting on the Auraria Campus: A Way to Prepare for Water Shortages Due to a Changing Climate
Creator:
Kuenzli, Jake
Place of Publication:
Denver, CO
Publisher:
Metropolitan State University of Denver
Publication Date:

Subjects

Genre:
Conference Papers ( sobekcm )

Notes

Acquisition:
Collected for Auraria Institutional Repository by the Self-Submittal tool. Submitted by Matthew Mariner.
General Note:
Faculty mentors: Chris Herr, Jackie Slocombe
General Note:
Major: Environmental sciences

Record Information

Source Institution:
Auraria Institutional Repository
Holding Location:
Auraria Library
Rights Management:
All applicable rights reserved by the source institution and holding location.

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RAINWATER HARVESTING ON THE AURARIA CAMPUS BY JAKE KUENZLI METROPOLITAN STATE UNIVERSITY OF DENVER ADVISED BY CHRIS HERR AND JACKIE SLOCOMBE

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BACKGROUND THE STATE OF COLORADO HAS ALWAYS SEEN THE IMPACTS OF A STRESSED WATER SUPPLY. IMPACTS THAT ARE PROJECTED TO BECOME WORSE WITH CLIMATE CHANGE PROJECTIONS. THE M ODELS SHOW THAT THERE COULD BE A 3 4 TEMPERATURE INCREASE, BUT POSSIBLY A 0 5% INCREASE IN AVERAGE P RECIPITATION BY 2050 (2) (SEE FIGURE 1) . THIS MEANS THAT THE THREAT TO WATER SUPPLY COULD BE DUE MORE TO INCREASED EVAPORATION RATE AND DECREASED RUNOFF, AS OPPOSE TO LACK OF PRECIPITATION. THE IMPLIC ATIONS OF NOT BEING PREPARED FOR THESE EVENTS CAN BE IMMENSE. A FACT THAT WAS MADE PAINFULLY OBVIOUS BY THE 2002 DROUGHT THAT COST THE STATE SOMEWHERE BETWEEN 1.3 TO 2.8 BILLION DOLLARS (3). THE CITY OF DE NVER AND THE AURARIA CAMPUS MUST BE READY FOR A REPEAT EVENT. ONE WAY TO ADDRESS THIS PROBLEM IS WIT H URBAN RAINWATER HARVESTING. FIGURE 1: TEMPERATURE AND PRECIPITATION PREDICTIONS BY 2050 (2)

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WHY IT IS NEEDED THERE IS CURRENTLY A PLAN IN PLACE TO USE DENVER WATER FOR OUR I RRIGATION SOURCE. THIS WOULD RESULT IN A 100% RELIANCE ON DENVER WATER (1). THIS RELIANCE, AS WELL AS A GROWING POPULATION THAT WILL RELY ON DENVER WATER, MEANS THAT ANY EVENT THAT IMPACTS THE SUPPLY OF DENVER WATER WILL HAVE NEGATIVE IMPLICATIONS FOR THE AURARIA CAMPUS. ANY REDUCTION OF D ENVER WATER USAGE WILL GREATLY BENEFIT THE CAMPUS AND THE CITY. THE 70,099 KGAL OF WATER NOW CO MING FROM DENVER WATER WILL RESULT IN A COST INCREASE OF AROUND $60,304.12 FOR A GRAND TOTAL OF $300,304.12 (1) . (SEE FIGURE 2 FOR THE CALCULATIONS) YEAR OF COST COST PER KILOGALLON KGAL FROM DENVER WATER TOTAL COST 2017 $4.284 55,378 KGAL *$240,000.00 2020 $4.284 70,099 KGAL $300,304.12 FIGURE 2: CALCULATIONS FOR INCREASED COST OF WATER USAGE *THIS IS TOTAL WATER COST AS APPOSE TO JUST COST BY KGAL* FIGURE 3: WATER SOURCES FOR 2017 (1)

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POTENTIAL SAVINGS FOR A POTENTIAL RAINWATER CAPTURE SYSTEM BEING DEPLOYED ON THE R OOF OF THE TIVOLI BUILDING THE AVERAGE SAVINGS ARE AROUND 123,927 GALLONS OF WATER. THIS EQUATE S TO AROUND $530.00 IN SAVINGS PER YEAR. WHILE THIS MAY NOT SEEM LIKE MUCH, ALL WAYS TO REDUCE OUR RELIANCE ON DENVER WATER NEED TO HEAVILY CONSIDERED. THIS WILL ALLOW THE CAMPUS TO BUILD UP ITS R ELIANCE TO ANY CLIMATE CHANGE ECTED FROM THIS UNIT CAN BE USED IN MANY WAYS. ONE WAY IS TO USE IT FOR THE IRRIGATION SYSTEM WHE RE THE COLLECTION TANK WOULD BE LOCATED (SEE FIGURE 5). ESTIMATED PERCENTAG E INCHES OF RAIN PER YEAR SQUARE FOOTAGE OF TIVOLI ROOF POTENTIAL CAPTURE (GALLONS) ESTIMATED CAPTURE (GALLONS COST OF DENVER WATER PER GALLON $ SAVED 25% 7 INCHES 113,600 SQFT 495,511 GALLONS 123,927 GALLONS $.0043 $538.00 FIGURE 4: TABLE FOR CALCULATIONS OF SAVINGS IN BOTH COST AND GALLONS OF WATER

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FIGURE 5: POSSIBLE SITE OF RAINWATER CAPTURE TANK AND IRRIGATION AREA THAT IT COULD FEED.

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REFERENCES 1. AURARIA CAMPUS 2019 WATER ACTION PLAN (2020, MARCH 6). RETRIEVED FROM HTTPS://WWW.SUSTAINABLEAURARIA.ORG/REPORTS 2. FUTURE TEMPERATURE AND PRECIPITATION CHANGE IN COLORADO: NOAA CL IMATE.GOV. (2014, AUGUST 19). RETRIEVED FROM HTTPS://WWW.CLIMATE.GOV/NEWS FEATURES/FEATURED IMAGES/FUTURE TE MPERATURE AND PRECIPITATION CHANGE COLORADO 3. GORDON, E., OJIMA , D., WESTERN WATER ASSESSMENT (PROGRAM), UNIVERSITY OF COLORADO BOULDER, COLORADO. ENERGY OFFICE, & COLORADO STATE UNIVERSITY. (2015). COLORADO CLIMATE CHANGE VULNERABILITY STUDY: A REPORT SUBMITTED TO THE COLORADO ENERGY OFFICE . FORT COLLINS, COLO.;BOULDER , COLO.;: WESTERN WATER ASSESSMENT. 4. WOODBURY, M., & BALDO , M. (2012). JOINT FRONT RANGE CLIMATE CHANGE VULNERABILITY STUDY . DENVER, CO: WATER RESEARCH FOUNDATION.

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THANKS! Any questions? Please send any questions to: Jkuenzli@msudenver.edu