The late summer and early fall are typically the time SEKID crews undertake maintenance in the upper watershed. Lower reservoir levels and no flow in the diversion ditches allow staff access to dams, diversions and other works with equipment and machinery to do everything from removing peat bogs to shoring up dam slopes and brushing the diversion ditches that transfer the headwaters from neighboring sub-basins into storage for use during the irrigation season.

SEKID has four reservoirs with ten dams and about nine kilometers of diversion ditches.  The total area of SEKID's watershed is 78.3 square kilometers. Of this area forty-nine square kilometers is diverted from sub-basins that would otherwise drain directly into Okanagan Lake or the Kettle Valley River. This accounts for about 63% of SEKID's watershed.