Evan, Ben and I tried a new (to us) put-in on the Nashua River today, along a bridge on Route 2-A near the Ayer/Shirley line and Groton-Shirley Road. It’s a good spot, not quite so easy as the next one downstream but good enough, and it’s just a few strokes upstream from the mouth of the Squanacook. We found that stream blocked by fallen trees, and weren’t feeling adventerous enough to portage through them, however. Seeing that the river was running unusually high and fast for this time of year, we decided to try to head upstream first, and found the going extremely tough. We had to paddle at a steady rate just to stay in one place, and headway required more vigorous effort. We tired a little sooner than usual, and the return (with the current) took a small fraction of the time and effort. On the bright side, I bet that a good many streams that wouldn’t ordinarilly be navigable in August are still going strong…