-CP-Zebra mussels appear to be here to stay in Riding Mountain National Park in Manitoba, a popular boating destination for summer tourists. Parks Canada says hundreds of live juvenile zebra mussels were found in the fall, attached to docks and infrastructure near the east end of Clear Lake. That is a different part of the lake from where they were first found and where a containment curtain had been installed to try to prevent them from spreading. Parks Canada last year banned most personal watercraft, including non-motorized vessels such as canoes and standup paddle boards, from the water. The department says trying to eradicate zebra mussels from the lake is not feasible and for this year, it is looking at allowing watercraft back on the lake if they are not…