Draft Kerala IWRM Action Plan Kuttanad Basin
Total Page：16
File Type：pdf, Size：1020Kb
Kerala IWRM Action Plan Kuttanad Basin Draft MARCH 25 Kerala State Government with support from Dutch Disaster Risk Reduction Team 1 Contents Contents .................................................................................................................................................... 2 Executive Summary .................................................................................................................................. 5 Abbreviations ............................................................................................................................................ 8 1 Introduction ...................................................................................................................................... 9 2 Background ..................................................................................................................................... 11 2.1 Floods 2018 .............................................................................................................................. 11 2.2 Post Disaster Needs Assessment ............................................................................................. 11 2.3 Follow-up ................................................................................................................................. 12 3 Institutional development .............................................................................................................. 13 3.1 Purpose of Institutional Development ..................................................................................... 13 3.2 Current status .......................................................................................................................... 13 3.3 River Basin Authority ............................................................................................................... 15 3.4 Intermediate coordination ....................................................................................................... 18 3.5 Framework ............................................................................................................................... 21 4 IWRM: physical planning and implementation .............................................................................. 22 4.1 Purpose .................................................................................................................................... 22 4.2 The Kerala wet and dry seasons .............................................................................................. 23 4.3 Basin characteristics ................................................................................................................. 24 4.3.1 Pamba River Basin ............................................................................................................ 24 4.3.2 Assessment Kuttanad/ Vembanad water system ............................................................ 27 4.3.3 Analysis of August 2018 flooding in the Kuttanad area ................................................... 28 4.4 Primary, secondary, tertiary water system .............................................................................. 30 4.5 Proposed interventions ............................................................................................................ 34 4.6 Recommendations on Actions for IWRM Physical Planning and Implementation ................. 38 4.7 Framework ............................................................................................................................... 39 5 Coastal Management ...................................................................................................................... 40 5.1 Purpose of coastal management ............................................................................................. 40 2 5.2 Coastal issues ........................................................................................................................... 40 5.3 Guiding principles for integral water resource and coastal management .............................. 40 5.4 Analysis of the current situation .............................................................................................. 42 5.5 Framework ............................................................................................................................... 47 6 Data management decision support systems ................................................................................ 49 6.1 Purpose of Data Management and Decision Support Systems for IWRM .............................. 49 6.2 Current status .......................................................................................................................... 50 6.3 Key components of the DSS ..................................................................................................... 51 6.4 Framework ............................................................................................................................... 53 7 Actual actions to be taken .............................................................................................................. 54 8 Investment and financing ............................................................................................................... 60 8.1 Packages ................................................................................................................................... 60 8.2 No-regret finances ................................................................................................................... 60 Annexes................................................................................................................................................... 62 A. Terms of Reference......................................................................................................................... 63 B. Overview of technical data requirements for modelling ............................................................... 68 C. Project factsheets ........................................................................................................................... 80 D. Approach Paper RBA ....................................................................................................................... 84 E. List of contributers .......................................................................................................................... 97 List of figures Figure 1River Basins in Kuttanad .............................................................................................................. 7 Figure 2 Organizational Setup of proposed River Basin Authority ......................................................... 16 Figure 3 Organizational Setup of proposed temporary coordination Cell ............................................. 19 Figure 4: Periyar and Pamba River Basins .............................................................................................. 24 Figure 5 Pamba Basin with main tributaries ........................................................................................... 24 Figure 6 Pelgrimage site of Sabarimala Temple ..................................................................................... 25 Figure 7 State of the art example of fully Integrated Watershed Management ................................... 26 Figure 8 Delineation Kuttanad Formation .............................................................................................. 27 Figure 9 Soil map of Kuttanad area ........................................................................................................ 29 Figure 10 Flood August 18th, 2018 (blue), Kuttanad area(orange), Pozhis(arrows) .............................. 30 Figure 11 Flood August 18th, 2018 in more detail .................................................................................. 30 Figure 12 Present situation delineation Kuttanad padasekharams ....................................................... 31 3 Figure 13 Present situation of part of Kuttannad canal system ............................................................. 31 Figure 14 Suggestion/Illustration of possible compartmentalization .................................................... 33 Figure 15 Overview intervention locations ............................................................................................ 37 Figure 16 Kerala State Water Data and Analytics Center ....................................................................... 50 Figure 17 Key model components of a DSS ............................................................................................ 52 Figure 18 Bridge Pacha Pandy Road ....................................................................................................... 81 Figure 19 View on Thottappally spillway ................................................................................................ 82 Figure 20 Taken from Illimala bridge ...................................................................................................... 83 List of tables Table 1 Logical Framework Institutional Development .......................................................................... 21 Table 2 Logical Framework for IWRM: physical planning and implementation .................................... 39 Table 3 Logical Framework for Coastal Management ............................................................................ 47 Table 4 Logical Framework for Data