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