yes parts of katihar & sonpur divsn can also be benefited by this project...but primary challenge will be to arrange the tanker wagons....because firstly IR doesnt have enough rolling stock to transport water..next they can use BTPN after decanting but in that case BTPN for transporting petroleum products may have a shortfall & once BTPN starts used in transporting water at least till the end of harvesting season,those cant be used for Petrol again..so IR has to procure enough No. of tankers first.
Another issue is when the takers will be loaded to carry water from NF/ER/EC towards WR/WCR/NW,but in return direction they must come empty.so there will be an empty haulage charge which the benefitting states have to born.