Electrical news and engineering . 5TA J440 TO 244-40RIVtH CHAINAGE.. nocK sEcrroN STA. 65-OOTO 315-00AND 366-00 TO 45£«S7 Three typical canal sections water level above the assumed absolute minimum; second,that starting from the common basis of a fixed minimumforebay level, the canal will deliver a constantly increasingquantity of power in proportion as the level of the head-wat-er rises above the assumed extreme minimum level, whichthe pressure tunnel cannot do to any appreciable extent byreason of its inherent hydraulic characteristics; and finally,that the open canal is the only agency, und

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Electrical news and engineering . 5TA J440 TO 244-40RIVtH CHAINAGE.. nocK sEcrroN STA. 65-OOTO 315-00AND 366-00 TO 45£«S7 Three typical canal sections water level above the assumed absolute minimum; second, that starting from the common basis of a fixed minimumforebay level, the canal will deliver a constantly increasingquantity of power in proportion as the level of the head-wat-er rises above the assumed extreme minimum level, whichthe pressure tunnel cannot do to any appreciable extent byreason of its inherent hydraulic characteristics; and finally, that the open canal is the only agency, under the above con-ditions, which can make automatically available the largequantities of excess power resulting from any temporary orpermanent increase in the level of the Chippawa-Grass Is-land Pool, above the extreme minimum level which has beenused as a basis of comparison. The above were the primary reasons which led to thefinal choice of the open canal for the connecting waterwaybetween Queenston and Chippawa. This canal, consists of454 miles of the improved