Government of Sri Lanka METRO COLOMBO URBAN DEVELOPMENT PROJECT (MCUDP) The Consultancy Services for the Preparation of a Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area Technical Report 07 WETLAND CLASSIFICATION MAPS WETLAND MANAGEMENT STRATEGY No.MCUDP/PHRD/03 January 2016 WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area TEAM MEMBERS Rob MCINNES ................................................ Team leader Sibila JAKSIC .................................................. Institutions and policy Project manager Rob MCINNES ................................................ Ecosystem services_PRA_Questionnaires Mark EVERARD .............................................. Ecosystem services Anusha BANDARA ......................................... Ecosystem services _Economic valuation Lalith AMARALAL ........................................... Ecosystem services_PRA GREEN MOVEMENT ...................................... Ecosystem services _Questionnaires Devaka WEERAKOON .................................... Biodiversity Gilles MOYNOT .............................................. Biodiversity Guillaume SALMON ....................................... Communication Plan Nicolas BARGIER ............................................ Water and soil quality Ranjana PIYADASA ........................................ Water and soil quality Pierre RIGAUDIERE ........................................ Physical features_Hydrology Anura RANWALA ........................................... Physical features_Hydrology GIS team : Thilina Buddima PALLETHANNE, Anthony ROUÉ, Vu Hai LE, Inakshi KARUNAWARDANA, Olivier PETOT (ASCONIT) and “SAFEGE” GIS team Supportive roles : Missaka HETTIARACHCHI ............................. Institutions and policy Mathieu SOUQUET ....................................... Wetland Management Strategy Keerthi Sri JAYAWARDENA ........................... Hydrology background Indrasiri L.H .................................................. Expert GIS Janaka DHARMASENA .................................. Urban planning issues Emmanuel THIRY .......................................... Advisory on governance issue Field assessment and survey were accomplished with participation of GREEN MOVEMENT staff for ecosystem services assessment and students from Colombo University for water quality and ecological surveys. WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area Metro Colombo Wetland Management Strategy was developed as a complementary initiative towards achieving capacity enhancement for flood and drainage management under the World Bank funded Metro Colombo Urban Development Project. The study received grant funding from the Japan Policy and Human Resources Development Fund and was directly supervised by the Wetland Management Division of the Sri Lanka Land Reclamation and Development Corporation : Dr. N. S. Wijayarathne ‐ Deputy General Manager L C G Soysa ‐ AGM ‐ Coordinator W D C T Gunasiri ‐ Environmental Scientist ‐ Surface and Ground Water and Soil surveys P D Pindeniya ‐ Ecologist ‐ Biodiversity Field surveys Ranoshi Siripala ‐ Ecologist ‐ Biodiversity Field surveys Kumudu Shirani ‐ Engineer ‐ Ecosystem Service Assessment U Y I L Dharmasoma ‐ Surface and Ground Water surveys Dammika Marasinghe ‐ Administrative Officer ‐ Social Surveys WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area CONTENTS 1 CLASSIFICATION OF WETLANDS IN THE COLOMBO METROPOLITAN REGION _______________________________________________ 1 2 THE RAMSAR CLASSIFICATION OF WETLANDS ________________ 5 3 METRO COLOMBO WETLANDS ZONING MAP ‐ HYDROLOGICAL FUNCTIONING __________________________________________ 9 4 METRO COLOMBO WETLANDS ZONING MAP ‐ HABITAT TYPES _ 11 5 METRO COLOMBO WETLANDS ZONING MAP – FUNCTIONAL WETLAND CLASSIFICATION _______________________________ 13 6 METRO COLOMBO WETLANDS TYPE PHOTOGRAPHS __________ 15 Page | iii WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area Page | iv WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area 1 CLASSIFICATION OF WETLANDS IN THE COLOMBO METROPOLITAN REGION Page | 1 WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area Page | 2 WETLAND MANAGEMENT STRATEGY ‐ Technical Report 07 ‐ WETLAND CLASSIFICATION MAPS Metro Colombo Urban Development Project ‐ Consultancy Services for the Preparation of Management Strategy for Wetlands and Carrying out an Assessment of Water Quality in the Inland Waterways and Lakes within Metro Colombo Area Dominant water Habitat Ramsar wetland Hydrodynamic Habitat type Wetland type Wetland description source feature classification types Floating vegetation Freshwater, non‐tidal, flowing water with floating vegetation M, N, 9 Flowing water Open water Freshwater, non‐tidal, open flowing water body M, N, 9 Open water Standing Floating vegetation Freshwater, non‐tidal, standing water with floating vegetation O, P, Tp, Ts, 2, 3, 6, 7 water Open water Freshwater, non‐tidal, open standing water body O, P, Tp, Ts, 2, 3, 6, 7 Active paddy Active paddy land 3 Non‐tidal Low herb Abandoned paddy Abandoned paddy land dominated by low herbs Tp, Ts, U, 3 Herb‐dominated Marginal vegetation Low herb communities on margins of non‐tidal freshwater bodies Tp, Ts Abandoned paddy Abandoned paddy land dominated by tall herbs Tp, Ts, W, U, 3 Tall herb Marginal vegetation Tall herb communities on margins of non‐tidal freshwater bodies Tp, Ts W Annona woodland Freshwater, non‐tidal Annona dominated woodland Xf, Xp Woodland Freshwater Mixed woodland Freshwater, non‐tidal mixed woodland Xf, Xp Floating vegetation Freshwater, weak/moderately tidal, flowing water with floating vegetation M, N, 9 Flowing water Open water Freshwater, non‐tidal, open flowing water body M, N, 9 Open water Standing Floating vegetation Freshwater, non‐tidal, standing water with floating vegetation O, P, Tp, Ts, 2, 6, 7 water Open water Freshwater, non‐tidal, open standing water body O, P, Tp, Ts, 2, 6, 7 Weak‐moderately Low herb communities on margins of weak/moderately ‐tidal freshwater Low herb Marginal vegetation Tp, Ts tidal bodies Herb‐dominated Tall herb communities on margins of weak/moderately ‐tidal freshwater Tall herb Marginal vegetation Tp, Ts W bodies Annona woodland Freshwater, weak/moderately tidal Annona dominated woodland Xf, Xp Woodland Mixed woodland Freshwater, weak/moderately tidal mixed woodland Xf, Xp Floating vegetation Brackish, weak‐moderately tidal, flowing water with floating vegetation M, N, 9 Flowing water Open water Brackish, weak‐moderately tidal, open flowing water body M, N, 9 Open water Standing Floating vegetation Brackish, weak‐moderately tidal, standing water with floating vegetation O, P, Q, R, Sp, Ss, Tp, 2, 3, 6, 7 Weak‐moderately water Open water Brackish, weak‐moderately tidal, open standing water body O, P, Q, R, Sp, Ss, Tp, 2, 3, 6, 7 tidal Low herb Marginal vegetation Low herb communities on margins of weak/moderately ‐tidal brackish bodies Sp, Ss, Tp, Ts Herb‐dominated Tall herb Marginal vegetation Tall herb communities on margins of weak/moderately ‐tidal brackish bodies Sp, Ss, Tp, Ts W Annona woodland Brackish, weak/moderately tidal Annona dominated woodland I, Xf, Xp Woodland Seasonally brackish Mixed woodland Brackish, weak/moderately tidal mixed woodland I, Xf, Xp / Brackish Floating vegetation Brackish, strongly tidal, flowing water with floating vegetation M, N, 9 Flowing water Open water Brackish, strongly tidal, open flowing water body M, N, 9 Open water Standing Floating vegetation Brackish, strongly tidal, standing water with floating vegetation O, P, Q, R, Sp, Ss, Tp, 2, 3, 6, 7 water Open water Brackish, strongly tidal, open standing water body O, P, Q, R, Sp, Ss, Tp, 2, 3, 6, 7 Strongly tidal Low herb Marginal vegetation Low herb communities on margins of strongly ‐tidal brackish bodies Sp, Ss, Tp, Ts Herb‐dominated Tall herb Marginal vegetation Tall herb communities on margins of strongly ‐tidal brackish bodies Sp, Ss, Tp, Ts W Annona woodland Brackish, strongly tidal Annona dominated