CE 394K: GIS in Water Resources Small Dam in Village of Tlamacazapa, Mexico Robin Lynch CE 394K: GIS...
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- Slide 1
- CE 394K: GIS in Water Resources Small Dam in Village of
Tlamacazapa, Mexico Robin Lynch CE 394K: GIS in Water Resources
Small Dam in Village of Tlamacazapa, Mexico Robin Lynch
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- Tlamacazapa, Guerrero Remote mountain village Wells
contaminated with: Arsenic, Lead, and Fecal Runoff Severe 6 month
dry season Limited piped water (~2 hours/week)
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- Wet Season Agua de Shrek
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- Dry Season (Same well)
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- Goal of Project Create a dam to meet water needs Delineate
stream network Determine best location for dam Delineate watershed
Size the dam using Sequent Peak Method
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- Stream Delineation Drains from village runoff, too polluted Too
far from road, difficult to maintain Perfect!
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- Watershed delineation Drainage Area = 7689600 m 2 Dam
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- Average Rainfall (2003-2007)
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- Flow Calculation Runoff ratio, w = 0.2 Drainage Area, DA =
7689600 m 2 Q = P*DA*w Calculated per month
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- Water Demand Calculate volume for 3 scenarios Assume population
of 6000 people Water Use Per Day: Current15L/c/day Minimum40L/c/day
Optimum100L/c/day Monthly Volume Current2700m 3 /month Minimum7200m
3 /month Optimum18000m 3 /month ~2.5 flushes ~7 flushes ~17
flushes
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- Dam Location
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- Dam Sizing
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- Sequent Peak Method (m 3 /month) tRteLtQtKt-1Kt mm/mo
May180006071.63157128840.800 June180006071.6315734201500
July180006071.63157282202.200 August180006071.63157325743.800
September180006071.63157290137.800 October180006071.63157135146.300
November1800093111.028930020.200 December1800093111.02890018111.03
January1800093556.4386799.718418111.0335867.75
February1800093879.08112610.9435867.7542135.89
March1800093966.006413121.5342135.8947980.36
April18000931034.37912278.7547980.3654735.99 Water
DemandEvaporation Losses Inflow Minimum Capacity (m 3 )
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- Dam Sizing m 3 /monthKt (m 3 )Height (m) Current270048993.5
Minimum7200140165.5 Optimum180005473610.5
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- Next Steps/Pitfalls Geological survey Community Participation
Clear organizational structure Affordable pricing
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- Questions?