1. Mapping Resource Profiles in the Ganges
Coastal Zone
Andy Nelson: International Rice Research Institute
Manirul Haque: Institute of Water Modelling
Ahsan Habib: Local Government Engineering Department
Moqbul Hossain: Soil Resource Development Institute
IRRI IWM LGED SRDI

2. G1 IRRI – IWM – LGED - SRDI Coastal polders

3. G1 IRRI – IWM – LGED - SRDI Outputs

4. G1 IRRI – IWM – LGED - SRDI Basin Challenge
Focus on brackish-water coastal zones, where agricultural
lands face salinity in the dry season > 5 ppt.
The challenge relates to innovations in water governance,
improved availability of dry-season water, improved
practices for managing salt-affected lands, and
intensification and diversification of farming systems.
How can spatial analysis play a role in this basin challenge?

5. G1 IRRI – IWM – LGED - SRDI Spatial analysis and data
-Geodatabase of the coastal zone
-Characterisation of test sites/polders
-Extrapolation domains of technologies and policies
-Land use plans under future hydrological scenarios

6. G1 IRRI – IWM – LGED - SRDI Trial sites
Trial sites in the coastal zone of Bangladesh and West Bengal
Polder 30 trials and
North 24 Parganas study watershed
BRRI Barisal
Polder 3
trials
South 24 Parganas Polder 43/2/F
trials
West Bengal Bangladesh

7. G1 IRRI – IWM – LGED - SRDI Example site location
100m
Polder 3
Sehara, Satkhira
88.99E, 22.52N

8. G1 IRRI – IWM – LGED - SRDI Leveraging detailed data

9. G1 IRRI – IWM – LGED - SRDI Leveraging detailed data

10. G1 IRRI – IWM – LGED - SRDI Water salinity monitoring

11. Salinity (ppt)
Salinity (ppt)
12.0
14.0
16.0
0.0
6.0
30-Jun
10.0
12.0
8.0 14.0
16.0
10.0 18.0
20.0
22.0
24.0
0.0
2.0
2.0 4.0
4.0 8.0
6.0
2-Jul
G1
4-Jun
4-Jul
6-Jun
6-Jul
8-Jun
10-Jun
8-Jul
12-Jun
10-Jul
14-Jun
12-Jul
16-Jun
14-Jul
18-Jun
20-Jun
16-Jul
22-Jun
18-Jul
24-Jun
20-Jul
26-Jun Salinity (ppt) Salinity (ppt)
Salinity (ppt)
22-Jul
28-Jun
10.0
12.0
14.0
16.0
0.0
2.0
IRRI – IWM – LGED - SRDI
30-Jun
24-Jul
2-Jul
0.0
2.0
4.0
8.06.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
22.0
24.0
30-Jun
10.0
12.0
14.0
16.0
18.0
20.0
22.0
24.0
0.0
4.0 2.0
4.0
6.0 6.0
8.0
26-Jul
4-Jul
PO
R-3
2-Jul
28-Jul
6-Jul
8-Jul
30-Jul
10-Jul
1-Aug
12-Jul
3-Aug
4-Jul
6-Jul
6-Jun 4-Jun
8-Jun 6-Jun
10-Jun
8-Jun
10-Jun
LDE
14-Jul 8-Jul 12-Jun12-Jun
5-Aug
16-Jul 10-Jul 14-Jun14-Jun
Date
18-Jul 16-Jun16-Jun
Date
7-Aug 12-Jul
20-Jul
9-Aug 18-Jun18-Jun
22-Jul 14-Jul 20-Jun20-Jun
11-Aug
24-Jul 16-Jul 22-Jun
13-Aug
26-Jul
22-Jun24-Jun
28-Jul 18-Jul 24-Jun26-Jun
15-Aug 26-Jun28-Jun
30-Jul
17-Aug 20-Jul
1-Aug 22-Jul 28-Jun30-Jun
19-Aug
3-Aug 30-Jun 2-Jul
5-Aug
21-Aug 24-Jul 2-Jul 4-Jul
7-Aug
23-Aug 26-Jul 6-Jul
4-Jul 8-Jul
9-Aug
Polder 3 (Station-5, Kanjia)
25-Aug 28-Jul 6-Jul10-Jul
11-Aug
27-Aug
13-Aug 30-Jul 8-Jul12-Jul
15-Aug
29-Aug 1-Aug 10-Jul14-Jul
Polder 3 (Station-3, Habra Khal)
17-Aug
31-Aug 3-Aug 12-Jul16-Jul
19-Aug 14-Jul18-Jul
2-Sep
21-Aug 5-Aug 20-Jul
Date
Date
4-Sep 16-Jul22-Jul
23-Aug 7-Aug 18-Jul24-Jul
25-Aug
6-Sep
Date
27-Aug 9-Aug 20-Jul26-Jul
8-Sep
29-Aug 11-Aug 22-Jul28-Jul
10-Sep
31-Aug 24-Jul30-Jul
12-Sep 13-Aug
2-Sep 26-Jul1-Aug
3-Aug
4-Sep
14-Sep 15-Aug 28-Jul5-Aug
6-Sep
16-Sep 17-Aug 30-Jul7-Aug
8-Sep 19-Aug
18-Sep
10-Sep 1-Aug9-Aug
12-Sep 21-Aug 11-Aug
3-Aug
14-Sep
13-Aug
5-Aug
23-Aug
Polder 3 (Station-5, Kanjia)
15-Aug
25-Aug 7-Aug
17-Aug
9-Aug
19-Aug
27-Aug
Polder 3 (Station-2, Ichamoti river)
21-Aug
11-Aug
Polder 3 (Station-1, Ichamoti River)
29-Aug 23-Aug
13-Aug
31-Aug 25-Aug
15-Aug
27-Aug
17-Aug
2-Sep 29-Aug
4-Sep 19-Aug
31-Aug
21-Aug2-Sep
6-Sep 23-Aug4-Sep
8-Sep 25-Aug6-Sep
10-Sep 27-Aug8-Sep
10-Sep
29-Aug
12-Sep 12-Sep
14-Sep 31-Aug
14-Sep
16-Sep 2-Sep
16-Sep
18-Sep
4-Sep
18-Sep 20-Sep

12. G1 IRRI – IWM – LGED - SRDI Cropping patterns
0.6 Polder 3 – highly saline
Vegetation and Water index
0.5
0.4
0.3
NDVI
0.2 NDWI7
0.1
0
1 Polder 43/2f – moderate to low salinity
Vegetation and Water index
0.8
0.6
0.4
0.2 NDVI
NDWI7
0
-0.2
-0.4

13. G1 IRRI – IWM – LGED - SRDI Polder land use patterns

14. G1 IRRI – IWM – LGED - SRDI Complex seasonal patterns
Boro rice (2009-10) Aus rice (2010-11) Aman rice (2010-11)
Area: 5,011,634 ha Area: 1,103,738 ha Area: 5,816,240 ha
6% 2%
31%
Rice
39% Rice/Other
Rice/Rice
Rice/Rice/Other
Rice/Rice/Rice
22%

15. G1 IRRI – IWM – LGED - SRDI
Thank you