Friday / June 29th - Our group had completed Middle Echo two times previously (June '16 & June '17). Today's trip through Middle Echo observed less water than previous attempts (no swims required although some places were up to chest deep - 5'11"). Our group all used full wet-suits. Just our group's perception, but the water did not seem as cold as in previous years. Keeper Pothole - Prior to our day through Echo, we inquired with the Zion rangers and with Zion Adventure Co. as to any reported recent conditions. Word was that water was low and that there was approximately 2 feet from the water surface to the exit slot. What was reported was close to what we found (see pic). Previous years the pothole was a swimmer, but this year the water was about chest high at the point of climb out (see pic). two hand-lines were present...one knotted and one knotted with small loops (barely big enough for a hiking boot). Climbing out with the existing hand-lines would have been possible, but taken a little extra effort. We were prepared as if there would be no hand-lines. We had a pot shot, 50 ft. of webbing and an aiden ladder. To allow a smoother exit, we clipped in the aiden ladder to the existing hand-line. This allowed us to get two good steps up (one under water and one at water surface level). A hand assist helped the rest of the group members through the keeper with no struggles. Another fun day through Middle Echo!