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Diagnosis of Catchment Water Allocation in Chile in a Non-Stationary Natural System

This study aims to provide a large sample diagnosis of water use rights and water supply in Chile, testing the current water allocation system under different climate change scenarios. The objective is to develop a tool for prioritizing resources to address water scarcity and management in the country.

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Diagnosis of Catchment Water Allocation in Chile in a Non-Stationary Natural System

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  1. Diagnosis of catchment water allocation in Chile in a non-stationary natural system PILAR BARRIA1, CAMILA ALVAREZ-GARRETON2,3, RAUL DIAZ-VASCONCELLOS1, FRANCO MAGNI1 pbarria@uchile.cl 1: Faculty of Forestry Sciences and Nature Conservation, University of Chile, Santiago, Chile 2: Center for Climate and Resilience Research (CR2), Santiago, Chile 3: Instituto de Conservación, Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Chile

  2. Water conflicts in Chile IntegratedWaterResources Management (IWRM) Donoso et al. (2018)

  3. What can hydrologist do to contribute with IWRM? Applications of large-sample hydrology in Water Management Since 1981, operatesunderthe Compsuntives, non consumptives, Surface WURs, Groundwater Use rights….

  4. Objectives To provide the first large sample diagnosis of water use rights and water supply, covering 516 basins collated by CAMELS-CL To test current water allocation system under different non-stationary climate change scenarios To develop a tool to prioritise the resources to address water scarcity and water management in the country ONGOING

  5. CAMELS-cl dataset provides a good description of Chilean Hydrology Weselectedcatchmentswith more than 70% of complete runoffinformation (period 1979-2016) Alvarez et al. (2018)

  6. Methodology 1. We calculated the theoretical available water for granting WURs using different time frames 2. We collated and systematize the WUR in Chile at the catchment scale 3. We calculated Indexes of anthropogenic Intervention at the catchment scale TheoreticalavailablewaterforgrantingWURs Proxy fortheoreticalavailablewaterforgrantingWURsusing non-regulatedPrecipitation data Indexes ofanthropogenicintervention Barria et al. (2018) Alvarez et al. (2018)

  7. Preliminary results Case 1 47 out of 49 catchments are overallocated in North and Central macrozones

  8. Preliminary results Case 2 58 out of 61 catchments are overallocated in North and Central macrozones

  9. Future Work Following Barria et al. (2019) methodology, future work considers to estimate water availability and to test the water allocation system in the 516 catchments collated by Camels-cl (Alvarez-Garreton et al., 2018) under different climate change scenarios. Then, we aim to provide guidelines for water management based upon our results.

  10. References Alvarez-Garreton, C., Mendoza, P. A., Boisier, J. P., Addor, N., Galleguillos, M., Zambrano-Bigiarini, M., ... & Ayala, A. (2018). The CAMELS-CL dataset: catchmentattributes and meteorologyforlargesamplestudies-Chile dataset. Hydrology and EarthSystemSciences, 22(11), 5817-5846. Barria, P., Rojas, M., Moraga, P., Muñoz, A., Bozkurt, D., & Alvarez-Garreton, C. (2019). Anthropocene and streamflow: Long-termperspectiveofstreamflowvariability and waterrights. Elem SciAnth, 7(1). Donoso, G. (2018). Overall Assessment of Chile’s Water Policy and Its Challenges. WaterPolicy in Chile, 209-219.

  11. COME TO VISIT MY POSTER! THANKS

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