(b) The location and the strength of the current.
(c) The best places for fords and for bridges.
(d) The tributary streams and springs.
(e) The location of ravines in relation to the river.
(f) Caves or places where caves may have been or may yet be formed.
(g) The nature of the soil and its adaptation to the formation of caves.
(h) The parts of the neighboring land that would be flooded first if the river overflowed its banks.
(i) The place in the river where a natural dam might be formed.
(j) The place where an artificial dam might be built.
(k) Sites that would make good camping-places for hunters.