water conservation landscape and drought
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Water Conservation Landscape And Drought . Milan J. Michalec Director, Cow Creek Groundwater Conservation District Kendall County, Texas. Overview. Make Better Use of Water Outdoors Examples Of Waste On Landscape Why Xeriscape ? Personal Experiences Design For Drought Water Sources - PowerPoint PPT PresentationTRANSCRIPT
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Water Conservation Landscape And Drought
Milan J. Michalec Director, Cow Creek Groundwater Conservation District
Kendall County, Texas
October 27, 2012
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Overview• Make Better Use of Water Outdoors
– Examples Of Waste On Landscape• Why Xeriscape?
– Personal Experiences– Design For Drought
• Water Sources – Condensate– Grey water– Rainwater
• Notes:– Presentation Is Intended For Pubic Educational Purposes – Photographs May Be Used With Permission Of Author– Observations And Strategies Represent The Views Of The Author
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Why Focus On Landscape?“Forty percent of all municipal water use is outdoors and half of that is lost to
runoff from the excessive watering of lawns (TWDB)”.
15 May 2012, After 2.56” Added To The Wettest May on Record
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July 20111604 East and Stone Oak Parkway
Front View Rear View
Average Texas Rainfall In 2011 Was 14.89”- The Driest Year On Record
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August 20111604 West and Green Mountain Road
Broken Sprinkler Head And OverwateringWater Running Into A Street Is Both Wasteful And Illegal
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September 2011Near Bergheim
Landscapes Can Be Inviting Even In Time of Drought
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Xeriscape Means
• Respect The Local Conditions – Balance – Maximum of 30% Turf/30% Hardscape/30% Plants– Plan For Drought
• Provide Water Only When Needed– Consider Competition From Deer
• Turf – Native Grass Such As Buffalo
• Hardscape– Native Stone and Timber
• Plants – Natives and Adapted Species – Adopt Organic Gardening Principles
• Key: Go Native
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Hill Country Xeriscape Does Not Mean Zero Color
2007 Total Rainfall: 59 inches
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But Each Year Is Different
2011 Total Rainfall: 16.98 Inches
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Be Prepared For Drought • Texas And Hill Country
– Long Periods of Drought Interrupted By Short Periods of Floods • Drought of Record
– 1950-1957 (Boerne 1954: 10. 29”) – Tree Ring Studies: Far Longer And Drier Periods
• Groundwater Pumping– Can Only Be Managed By Local Groundwater Conservation
Districts – Develop and Implement Drought Contingency Plans—Drought
Restrictions • Cow Creek Groundwater Conservation District
– Covers Nearly All of Kendall County – Drought Contingency Plan Can Implement Mandatory 40%
Reduction In Pumping– Landscape Watering Allowed Once A Week With Hand Hose Or
Bucket
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Wet Conditions
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Drought Conditions
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Keep Plants Alive In Drought
• Alternative Water Sources – Condensate Recovery– Reuse Grey Water– Rainwater Capture
• No Restrictions On When Used– Water When You Need To
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Water Storage 55 Gallon Food Grade Barrels
Source: Dave The Barrelman of San Antonio, http://www.davethebarrelman.net/
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Condensate
Water From The Air Conditioner
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Typical Summer Daily Production 8-10 Gallons
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Reuse Grey Water
• What Is Grey Water?– Any Water Used In The Home, Except Water
From Toilets, Is Called Grey Water• Dish, Shower, Sink, And Laundry Water Comprise
50-80% Of Residential “Waste" Water• May Be Reused For Other Purposes, Especially
Landscape Irrigation
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Typical Daily RecoveryDishes: 5 Gallons
Shower: 10+ Gallons Per Person
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Best Source: Washing Clothes
Avoid Using Harsh Detergents and Chlorine Bleach
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Hose Connections
From Water Pump From Rear Of Washer
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Route Outlet Hose Outside
Water Pressure Sufficient To Use A Fifty Foot Hose
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Use It Now
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Save It For Later
One-Third Horsepower Sump Pump Moves Water From Storage
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Tip: Add Fertilizer When Watering
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Rainwater Harvesting 1” RAINFALL, 1,000 Sq Ft Roof, YIELDS 600 Gallons
• Average Annual Rainfall– 33.62 (1893-2012)
• Highest Annual Rainfall– 64.17 (1992)
• Lowest Annual Rainfall– 10.29 (1954)
• Consecutive Months Without Rain – 5 (1947)
• Rarely More Than 30 Days
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Basic Rainwater Capture
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Improved Rainwater Capture
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Basic/Improved Collection
• Shortfalls – Inefficient Capture – Insufficient Storage– Evaporation – Mosquitoes
• Better Way?– Increase Capture and Storage– Seal Water From Elements
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200 Square Foot Roof
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Install Gutters
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Increase Storage
1,550 Gallon Storage Tank
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Add Collector Pipe
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Bury the Pipe
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Gravity Feed To Storage
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Sunlight Does Get Inside TankProblem: Algae Growth Solution: Paint Exterior
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Water For Your Hill Country Garden
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Ready For Rain,Prepared For Drought
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References
• Graywater Assessment, 2011: Final Report, Steven J. Graziano, Dr. Daniel H. Zitomer, P.E. (PI), Dr. Michael Switzenbaum (Co-PI), Dr. Vladimir Novotny, Marquette University College of Engineering Department of Civil & Environmental Engineering. Prepared for the: Milwaukee Industry/University Cooperative Research Center (I/UCRC) on Water Equipment and Policy.
• Texas Administrative Code." Title 30, Part 1, Chapters 210 and 285.• Rainwater Harvesting Potential and Guidelines for Texas. 2006 Report to
the 80th Legislature. T. R. H.E. Committee. Austin, TX, Texas Water Development Board.
• The 2005 Texas Manual on Rainwater Harvesting. Austin, TX, Texas Water Development Board.
• Oasis Design. Viewed at: http://www.oasisdesign.net/greywater/laundry/
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Next Project:More Storage
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Questions?