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| No. | Station | Location | Ordinate | Land use |
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| 1 | ST-1 | Way Kasui Kiri River downstream | 4°42′34.94″S 104°28′32.92″E | Inhabitant settlement in Kasui Pasar Village of Kasui subdistrict plantation, and Bukit Punggur forests registered 24 |
| 2 | ST-2 | Upstream of Way Umpu River before receiving water flow from Way Kasui Kiri River | 4°42′36.55″S 104°28′35.44″E | Inhabitant settlement in Kasui Pasar Village of Kasui subdistrict plantation, and Bukit Punggur forests registered 24 |
| 3 | ST-3 | Way Umpu River that received water flow from way Kasui Kiri River | 4°42′33.89”S 104°28′36.52″E | Inhabitant settlement in Kasui Pasar Village of Kasui subdistrict plantation, and Bukit Punggur forests registered 24 |
| 4 | ST-4 | Ojolali River downstream | 4°41′11,67″S 104°29′49.37″E | For gold and manganese mining and inhabitant settlement in Ojolali Village of Umpu Semenguk subdistrict |
| 5 | ST-5 | Way Umpu River at suspension bridge Ojolali Village | 4°41′9.57″S 104°29′49.45″E | Inhabitant settlement in Ojolali Village of Umpu Semenguk subdistrict |
| 6 | ST-6 | Way Neki River downstream | 4°38′45.87″S 104°30′22.44″E | Plantation, mining, and inhabitant settlement in Gunung Katun Village of Baradatu subdistrict |
| 7 | ST-7 | Downstream of Way Umpu River received water flow from Way Neki River (ST-6) and other rivers above it (ST-1 to ST-5) | 4°38′45.53″S 104°30′20.48″ E | This was the area that was used to predict the water pollutant carrying load capacity |
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