Research Article
Assessment of a Physicochemical Indexing Method for Evaluation of Tropical River Water Quality
Table 5
The index values and the classes of water quality assigned with DOE-WQI, modified DOE-WQI, River Ganga, and
according to sampling months.
| | ST | Dec 15 | Jan 16 | Mar 16 | | DOE-WQI | Modified WQI | River Ganga | | DOE-WQI | Modified WQI | River Ganga | | DOE-WQI | Modified WQI | River Ganga | |
| | 1 | 91 (II) | 77 (II) | 61 (II) | 73 (II) | 80 (II) | 71 (III) | 55 (II) | 59 (III) | 87 (II) | 73 (III) | 59 (II) | 62 (II) | | 2 | 91 (II) | 75 (II) | 62 (II) | 68 (II) | 82 (II) | 73 (III) | 58 (II) | 60 (II) | 83 (II) | 70 (III) | 53 (II) | 60 (II) | | 3 | 89 (II) | 74 (II) | 60 (II) | 63 (II) | 82 (II) | 75 (II) | 58 (II) | 60 (II) | 82 (II) | 69 (III) | 53 (II) | 60 (II) | | 4 | 88 (II) | 77 (II) | 66 (I) | 81 (I) | 82 (II) | 68 (III) | 55 (II) | 60 (II) | 81 (II) | 64 (III) | 56 (II) | 50 (III) | | 5 | 94 (I) | 80 (II) | 65 (I) | 82 (I) | 73 (III) | 66 (III) | 48 (III) | 62 (II) | 76 (III) | 62 (III) | 46 (III) | 50 (III) | | 6 | 82 (II) | 67 (III) | 59 (II) | 67 (II) | 73 (III) | 64 (III) | 53 (II) | 50 (III) | 82 (II) | 63 (III) | 50 (II) | 47 (III) | | 7 | 89 (II) | 75 (II) | 60 (II) | 73 (II) | 78 (II) | 62 (III) | 51 (II) | 47 (III) | 74 (III) | 64 (III) | 46 (III) | 50 (III) | | 8 | 87 (II) | 76 (II) | 58 (II) | 77 (II) | 72 (III) | 62 (III) | 47 (III) | 43 (III) | 80 (II) | 65 (III) | 54 (II) | 53 (III) | | 9 | 85 (II) | 73 (III) | 64 (I) | 76 (II) | 78 (II) | 70 (III) | 44 (III) | 70 (II) | 83 (II) | 70 (III) | 54 (II) | 60 (II) | | 10 | 91 (II) | 77 (II) | 61 (II) | 73 (II) | 62 (III) | 52 (IV) | 43 (III) | 50 (III) | 65 (III) | 53 (IV) | 49 (III) | 67 (II) | | 11 | 71 (III) | 60 (III) | 45 (III) | 60 (III) | 66 (III) | 55 (IV) | 43 (III) | 50 (III) | 62 (III) | 53 (IV) | 37 (III) | 67 (II) | | 12 | 70 (III) | 60 (III) | 49 (III) | 79 (II) | 67 (III) | 53 (IV) | 44 (III) | 47 (III) | 59 (III) | 48 (IV) | 37 (III) | 48 (III) | | 13 | 64 (III) | 50 (IV) | 45 (III) | 51 (III) | 73 (III) | 63 (III) | 46 (III) | 63 (II) | 78 (II) | 63 (III) | 45 (III) | 60 (II) | | 14 | 83 (II) | 69 (III) | 59 (II) | 59 (III) | 77 (II) | 67 (III) | 47 (III) | 67 (II) | 77 (II) | 62. (III) | 43 (III) | 60 (II) | | 15 | 80 (II) | 65 (III) | 51 (II) | 57 (III) | 77 (II) | 66 (III) | 47 (III) | 51 (III) | 73 (III) | 59 (III) | 42 (III) | 57 (III) | | 16 | 83 (II) | 70 (III) | 57 (II) | 62 (II) | 65 (III) | 55 (IV) | 47 (III) | 10 (V) | 71 (III) | 54 (IV) | 43 (III) | 40 (III) | | 17 | 76 (II) | 66 (III) | 52 (II) | 30 (IV) | 75 (II) | 65 (III) | 47 (III) | 40 (IV) | 78 (II) | 62 (III) | 45 (III) | 53 (III) | | 18 | 77 (II) | 66 (III) | 49 (III) | 38 (III) | 64 (III) | 52 (IV) | 43 (III) | 16 (V) | 69 (III) | 58 (III) | 45 (III) | 50 (III) |
|
|
