Cached Cow - How AGOL/Collecotor Saved Resources to Protect the Aquifer

Cached Cow - How AGOL/Collecotor Saved Resources to Protect the Aquifer

Sarah Eason, Aquifer Protection - Edwards Aquifer Authority


  1. Cached Cow-How AGOL/Collector Saved Resources to Protect the Aquifer Sarah

    Eason Aquifer Protection Edwards Aquifer Authority Texas GIS Forum 2018
  2. In the year 2000, the Edwards Aquifer Authority (EAA) began

    buying environmentally sensitive land. In 2008 we partnered with the City of San Antonio (CoSA) to aid in the Edwards Aquifer Protection Program and was renewed in 2016. Through a one-eighth cent sales tax over the past 17 years, CoSA has acquired more than 150,000 acres of conservation easements and protected lands in order to protect water quantity and water quality of the Edwards Aquifer. The EAA provides geologic assessments and annual monitoring for all the prospective and acquired lands. This map represents the distribution and size of the EAA and CoSA protected lands.
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  4. Monitoring the land ➢ EAA inspects annually for all Conservation

    Easements ➢ Inspection criteria are based on CE Monitoring Plans developed for each individual property. ➢ Inspection Reports are generated to document compliance with the CE Covenants: ➢ Today, what is the state of the lands which were agreed upon to be conserved, used with restrictions or remain undeveloped? Owners of the properties enter into a Conservation Easement (CE) to “protect indefinitely the quantity and quality of the water percolating into the Edwards Aquifer.”
  5. Old Methods – Field Gear

  6. New Methods: Collector for ArcGIS! ➢It’s a map! ➢It’s a

    data collector! ➢It’s a navigator! ➢It’s a field book! ➢It’s a compass! ➢It’s a camera! ➢It works offline! ➢It syncs with the office in real time!
  7. New Methods Instead of data and maps spread out over

    five people’s PC’s, two network locations and Sharepoint, we now have a dedicated geodatabase structure for publishing and maintaining the inspection data and map products.
  8. A map to see all the easements together

  9. Streaming web map on iPad Great for navigation to features

  10. Cache a map with imagery for navigation on the easement

    with no cell service.
  11. Measure distances and areas

  12. Record observations at the current location or pick a point.

  13. Edits are stored on device in cached maps

  14. Sync edits upon return to cell service

  15. Reference reports and other documents

  16. Radar weather

  17. Compass App

  18. Recharge and karst landscape ➢ Karst topography describes a landscape

    containing soluble rocks typified by the presence of caves, sinkholes, and other natural dissolution features produced by the interaction of water, minerals within the rock, and many other natural processes.
  19. Recharge and karst landscape ➢ Precipitation and stream flow then

    percolate through the highly porous and permeable Edwards limestone, exposed at the ground surface in the recharge zone.
  20. Recharge and karst landscape ➢ Because of down faulting the

    Edwards Aquifer drops deep below land surface in the artesian zone. The rocks above the Edwards are relatively less permeable, creating a confined condition that adds pressure to the aquifer. Where pressure is sufficient, and natural faults or fractures are present, water will be forced to the surface in the form of springs.
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  22. Why keep these properties natural? These details were part of

    the argument for bringing one particular property into the program (and many other properties exhibit similar characteristics): ➢Documented gain/loss studies for the Frio River, downstream and west, confirm surface flows are lost to the subsurface in this area;
  23. Why keep these properties natural? ➢Due to the proximity of

    this property to contiguous Devils River Formation (Kdvr), stormwater runoff will flow across the contiguous portions of Kdvr and have a high potential to recharge the Edwards Aquifer farther downstream;
  24. Why keep these properties natural? ➢Complete loss of surface flow

    was observed during the 2013 site visit ~8 stream miles south, where contiguous Kdvr is exposed in the creek bed;
  25. Why keep these properties natural? ➢The current conceptual understanding of

    the Edwards Aquifer system indicates that recharge occurring in the property area has high probability of flowing to the Aquifer.
  26. The power of water ➢ Disappearing streams: ➢ hidden entrances

    and ➢ subject of high-profile research ➢ Caves and sinkholes: direct conduits with extreme recharge- and pollution- potential ➢ Seeps and springs: pressurized exits and reliable condition indicators
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  29. Disappearing Streams: underground water flow “MP 8 overlooks two waterfalls

    on the northwest potion of the site. Given the volume of water in the receiving pool, other seeps or springs may be present in the pools. Stratified rock layers visible at the falls indicate water may move beneath the stream bed.”
  30. 2009 2011 2012 2013 2015 2016

  31. Stream flow measurements

  32. Headline Here Subhead Here Seeps and springs

  33. 2013 2014 2015 2016

  34. Entering the caves The Edwards Limestone is porous, the holes

    ranging from microscopic to cavernous. Caves offer insight into the underground aquifer.

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  39. Just don’t breathe too much bat guano…

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  44. Drought In a rainfall comparative study we did on 2003-2014,

    we found that more than half of the recharge in eleven years occurred in just two of those years.
  45. All the engineering in the world will not increase recharge

    when there is no rain. The recharge dams require a substantial rain event for runoff to exceed the rate of natural recharge infiltration over the recharge zone.
  46. 2014 2015 2016 See the drought?

  47. Hazards Having collector in the field means we know our

    location at all times, and if there is cell service, we can find each other, too. Not having to carry all the tools replaced by Collector and mobile devices means we can carry all sorts of emergency gear… for all kinds of emergencies!
  48. “Bummer, dude!”

  49. Texas is known for unpredictable weather.

  50. Mud and torn-up roads are the result

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  52. “Texas Hill Country”

  53. …and for some, “you get to climb hills only frequented

    by feral Spanish goats.” Some MPs are within walking distance of driving distance…
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  55. “Breaking brush”

  56. Subhead Here Algarita Guajillo Mesquite Cactus Prickly pear Tocolote Catclaw

    Sotol Horse-crippler cactus Tasajillo
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  58. You’ve heard everything is bigger in Texas. This ant bed

    is an ant mountain!
  59. Testimonials Hear from the Conservation Easement Inspection team members, and

    how Collector has changed the way they do business!
  60. Robin’s perspective

  61. Emily’s story i-9

  62. Bob’s story

  63. The hill from the top, running down The hill from

    the bottom, looking up Ben and the Bees!
  64. Brent’s story

  65. Clayton’s perspective

  66. Thomas’ story

  67. Taylor’s perspective

  68. Chris’ perspective

  69. Bob’s favorite story

  70. Brent’s newest story i-10

  71. Robin’s story

  72. Bob’s perspective

  73. Brent’s perspective

  74. We are happy campers and more efficient inspectors now that

    we use Collector for ArcGIS. Thanks, ESRI!
  75. Aquifer Protection Team – Current and Former Members •EAA Staff

    -Bob Hall -Robin Tremallo -Chris Abernathy -Ben Urbanczyk -Fred Wills -Doug Grieco -Jenna Pace -Brent Doty -Taylor Bruecher -Emily Thompson -Thomas Marsalia -Clayton Rollins -Sarah Eason •CoSA EAPP staff -Susan Courage -David Bernal Thanks to all for contributions of stories, photos and wisdom.
  76. Non-EAA image credits ➢1 Wild hog: ➢2 Wild hog: 1.jpg?itok=9YUhnkv8&fc=50,50 ➢3 Feral hog: b5f824ff65e51d525728c55cf3980 ➢4 Javelina: e3-3b50-50b9-ba22-db2e6c9cb5b7/555d23dcee39e.image.jpg ➢5 Javelina: e3-3b50-50b9-ba22-db2e6c9cb5b7/555d23dcee39e.image.jpg ➢6 Feral hog: ➢7 Feral hog: ➢8 Javelina: ➢9 Feral hogs: https://s-media-cache- ➢10 Mountain lion: ➢11 Well and bucket: with-a-wooden-roof-and-bucket-attached-to-a-rope-in-a-flat-barren-landscape-with--Stock-Photo.jpg
  77. Thank you for listening. Questions/ Comments?