Data format: SDE Feature Class
Coordinate system: Indian_1960_UTM_Zone_48N
Location: Server=mekserv3; Service=5153; Database=mrc; User=sde; Version=sde.DEFAULT
| Irrigation Project Area in the Lower Mekong Basin | |
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Data format: SDE Feature Class Coordinate system: Indian_1960_UTM_Zone_48N Location: Server=mekserv3; Service=5153; Database=mrc; User=sde; Version=sde.DEFAULT |
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Abstract:
Irrigation area of the LMB as of 2001 |
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Metadata elements shown with blue text are defined in the International Organization for Standardization's (ISO) document 19115 Geographic Information - Metadata. Elements shown with green text are defined by ESRI and will be documented as extentions to the ISO 19115. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog.
No.184, Unit 18, Fa Ngoum Rd., Ban Sithane Neua
No.184, Unit 18, Fa Ngoum Rd., Ban Sithane Neua
No.184, Unit 18, Fa Ngoum Rd., Ban Sithane Neua
Irrigation area of the LMB as of 2001
No.184, Unit 18, Fa Ngoum Rd., Ban Sithane Neua
AREA ------------------------- Lower Mekong Basin including Lao and Thai in LMB parts DESCRIPTION ------------------ Mapping of irrigation areas as of 2001 SOURCE MAP ------------------- Cambodia: - 1:50,000 scale topographic maps, UTM Zone 48, US series L7016 (1960s/70s) Laos: - 1:50,000 scale topographic maps Gauss reprojected to UTM Zone 48 Thailand: Various inculding project maps at various scales Vietnam: - 1:100,000 scale maps with supplemenmtary information from Sub Institute of Water Resource Planning (SIWRP) SOURCE DATA SET -------------- Cambodia: - 1:50,000 scale topographic maps, UTM Zone 48, US series L7016 (1960s/70s) Laos: - 1:50,000 scale topographic maps Gauss reprojected to UTM Zone 48 Thailand: Various inculding project maps at various scales Vietnam: - 1:100,000 scale maps with supplemenmtary information from Sub Institute of Water Resource Planning (SIWRP) SOURCE AGENCY ---------------- MRCS GENERATION ------------------- Union from 4 original datasets has been made by reproject from zone 47 in Thai part to zone 48 and from WGS84 of Vietnam delta part to UTM 48. STATUS ----------------------- Last update: December 2001 Completion status: 100 % COMMENTS --------------------- Cambodia: Proj_id1 and proj_id2 have been added as it appears some of the irrigation areas are served by more that one project. Temp_id refers to the original ID during digitising and should be eventually deleted after checking of data. Note: temporary notes used during digitising and should be eventually deleted. Area_id Not required as only 1 area per scheme. Proj_id1 and proj_id2 provided as in some cases not clear which area is linked to which project. Irrigation area is difficult to define in Cambodia and more work is required to improve the accuracy, and availability of irrigation area data. Temp_id and note are temporary information used during the digitising and should deleted after final checking. Laos: Follows LRIAD format. Irrigation area boundaries require further checking.Temp_id is a temporary ID used during digitising. Thailand: There is some overlap of the irrigation areas from the different agencies. To clearly present this information an additional field has been added Vietnam: Original units decimal degrees in Map Info Format. Reprojected to UTM 48 To represent the complete situation the data base shows all the blocks-the function of the blocks can be seen in the ‘proj_function’ field in ir_data.dbf. Each block represents an investment and must be considered as part of the overall part of the system. project_id Unique Project ID code as above Area_id NA Name Name of project as above Shape_area Gross area of polygon in hectares Crop_code Shows the main cropping in each block DOCUMENTATION ---------------- Operator: Consultant:Adrian Young, Irrigation and Inundation Expert, Consultant to LRIAD Project Ms. Manithaphone Mahaxay, Image Interpretation and Mapping Specialist, Technical Support Division UNITS ------------------------ Map Units: meters System: UTM Zone 48 Datum: Indian 1960 FORMAT ----------------------- SDE 9.x Polygon feature POLYGON ATTRIBUTES -------------- REF Running reference number MRC_ID MRC code C/V/L/T with running number(ref.) PROJ_NAME Project name PROJ_ID Unique project ID codes as used by each riparian country SHA_AREA Gross area of polygon in hectares AGENCY Agency who provided the data SOUR_TH_P Code identify pumped irrigation area from different agencies RP = Pumped irrigation area from RID MP = Pumped irrigation area from MOI DP = Pumped irrigation area from DEDP SOUR_TH_G Code identify gravity irrigation area from different agencies RG = gravity irrigation area from RID MG = gravity irrigation area from MOI DG = gravity irrigation area from DEDP SHA_AREA_TH_G Gross area of polygon in hectares of gravity irrigation area of Thai part AGENCY_TH_G Agency who provided the gravity irrigation area data of Thai part PROJ_ID_TH_G Project ID codes of gravity irrigation area of Thai part as used by Thai agencies CCODE Country code, where 1 = Cambodia 2 = Lao PDR 3 = Thailand 4 = Viet Nam Note: The planned or potential area refers to the potential size of the scheme based on water and land availability generally ascertained at the design stage.The area in the majority of projects refers to the area of rice cropping. Non rice cropping is usually fairly small and/or with limited water demand and is not not normally considered. The Actual Irrigated Area: The actual irrigated area is the area normally irrigated. It includes the areas that have some form of irrigation investment or equipment and would include areas that receive only supplementary irrigation in the wet season. Areas of wholly rainfed rice without any form of irrigation should however not be included. The data refers in most cases only to the area of rice cropping. At present non rice cropping is usually fairly small and/or with limited water demand and is not normally considered. The actual irrigated area is considered key data that should be presented for all projects.
No.184, Unit 18, Fa Ngoum Rd., Ban Sithane Neua
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