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Remote Sensing for substantive water management in arid and semi-arid areas The Brazilian Experience. Evlyn Novo Remote Sensing Division National Institute for Space Research-Brazil. Summary. Water management issues in the Brazilian arid and semi-arid region Institutional Setting

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Remote Sensing for substantive water management in arid and semi-arid areas The Brazilian Experience

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Remote Sensing for substantive water management in arid and semi-arid areasThe Brazilian Experience

Evlyn Novo

Remote Sensing Division

National Institute for Space Research-Brazil

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Summary

  • Water management issues in the Brazilian arid and semi-arid region

  • Institutional Setting

    • Brazilian agencies using RS for water management

  • Remote Sensing Applications

    • Desertification assessment

    • Crop irrigation monitoring

    • Aquaculture zoning

    • Cartography

    • Reservoir management

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Brazilian arid and semi-arid region

  • 880 000 km2 to 1000 000 km2

  • 10 states

  • 1257 municipalities

  • 20 million inhabitants

  • 18 650 artesian wells

  • 12 190 active artesian wells

  • 490 000 ha of irrigated land

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Water management issues

  • Land degradation and desertification

  • Crop irrigation & salinization

  • Soil erosion & reservoir silting

  • Hydroelectric power generation

  • Urbanization & drinking water shortage

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Institutional setting

  • Federal Agencies

    • Water Resources Secretariat at the Ministry of Environment,Water Resources and Legal Amazon (MMA)

      • National Desertification Plan

    • Semi-arid Research Unity (CPATSA) of the Brazilian Agricultural Research Corporation (EMBRAPA)

      • Crop irrigation, soil degradation

    • National Water Agency (ANA)

      • National Water Research Program

    • Brazilian Geological Survey (CPRM) at the Ministry of Mines and Energy (MME)

      • Ground water survey in the Brazilian semi-arid region

    • National Electric Energy Agency (ANEEL) - MME

      • Electric Energy Production and Consumption Legislation Enforcement

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Institutional setting

  • Regional Agencies

    • S.Francisco River Basin Development Company (CODEVASF)

      • strategies for reducing water use conflict

  • State Agencies

    • Ceara Meteorology and Water Resources Institute (FUNCEME)

      • Weather forecast

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Remote sensing applications

  • Desertification Regional Survey

    • MMA/UFPI

      • Vegetation cover information derived from remote sensing data + soil maps + meteorological data from ground stations

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Irrigated crop monitoring

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Xingo Reservoir

Reservoir flooded area assessment

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Remote sensing & aquaculture

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Cartography

  • X Band SAR interferometry

    • S. Francisco transposition project

    • 420 Topographic charts at 1:5 000 scale

    • 2 m contour line

    • 1 m precision

    • 10 000 km2

    • 2 year project – 1998/1999

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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X band SAR interferometry

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Reservoir management

S. Francisco Reservoirs

  • Ground sampling

Reis, 2002

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Reservoir silting assessment

  • Landsat - ETM+ concurrent to ground data acquisition

  • Empirical modeling

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Legal enforcement

Enforcement of the water conservation law

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Surface water monitoring

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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Concluding remarks

  • The use of remote sensing techniques for water resources management in Brazil is far behind of other applications.

    • 1) lack of cloud free remote sensing data at a time frequency compatible to the water resource monitoring needs;

    • 2) lack of human resources capable of coupling with the complexity of remote sensing applications to water resources.

39th COPUOUS/SCT Symposium on Remote sensing for substantive water management - Viena - February 25-26, 2002


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