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Table 3.1 Population on sub-district level across the sub-basin
CODE Subdistrict
Male Female
Householder
7210110 Dolo 10,101
10,116 5,046
7210090 Dolo barat 6,145
7,184 3,423
7210080 Dolo selatan 8,641
7,976 4,070
7210030 Kulawi 7,468
6,991 3,691
7210020 Kulawi selatan 4,576
4,529 2,233
7210040 Lindu 2,398
2,359 1,174
7210130 Marawola 10,207
9,815 4,188
7210140 Marawola barat 5,423
5,461 2,883
7210060 Palolo 13,838
12,840 7,112
7210120 Sigi biromaru 19,577
19,163 10,270
7271010 Palu barat 44,179
44,194 19,782
7271020 Palu selatan 50,041
51,766 22,658
7271040 Lore utara 4,941
4,321 2,233
Jumlah
187,535 186,715
88,763
Source: National Statistical Bureau, 2009
3.2 Data Availability
3.2.1 Raster and Vector Datasets
Time series of satellite images of Landsat were used to estimate the land cover changes. Three different acquiring times of Landsat imagery were used to
analyze the land cover changes. The imageries were acquired in 1990, 2001, 2007 and 2009. The imageries data are available to download freely at U.S. Department
of the Interiors U.S. Geological survey USGS at the global visualization viewer website
http:glovis.usgs.gov . The images consist of eight electromagnetic
channels including visible, near infrared, middle infrared, thermal, middle thermal 2 and panchromatic, except the images on 1990 that only have five
electromagnetic channels. Besides of Landsat images, other raster data were used for analysis. The
elevation data of SRTM Shuttle Radar Terrain Mission were obtained from USGS. It has approximately 90 meters of spatial accuracy. The elevation data
were used to delineate the watershed on the study site.
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19
Table 3.2 List of used datasets
Landsat ETM WRS: PR Acquisition Date
Data Format
116061 16121990
GeoTiff 116061
24082001 GeoTiff
116061 17102009
GeoTiff
DEM Ground Resolution m
Data Format
SRTM 92
ESRI Grid
Others Data Sources
Data Format
Reconnaissance soil map Scale 1:50,000
PUSDIKTANAK Shape Files
Topographic Map Geospatial Information Agency
Vector Provincial Spatial
Development Plan National Land Agency
Shapefiles and Hardcopy
Rainfall BMKG and PU SDA
Tabular hard copy River Discharge
PU SDA Tabular hard copy
Meteorological data BMKG and PU SDA
Tabular hard copy Population
Statistics Bureau Hard Copy
3.2.2 Meteorology and Climate Datasets
Meteorological data were collected during field data recording process. The collected meteorological data came from two observation agencies;
Meteorological, Geophysical, and Climatology agency BMKG and Ministry of Public Work for water resources management. Both of these government agencies
have rainfall observation stations that spreading around the Palu Catchment. The number of rain gauge data were collected during field campaign is 10 rain gages
station with 20 years of rainfall data recording period. According to these agencies, the rainfall observation devices divided into two types; manual and
automatic data logger. The automatic observation device is recording the rainfall data every 1 hour and for manual devices, the officers were recording the data
once per day. In summary, the locations of the rain gauge stations on the study area as shown in Figure 3.3.
