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Channel degradation is now a <br />One -Way process: <br />• Channel widening events (large peak flows and <br />sediment movement) are now rare. <br />• When vegetation is established now, it is rarely <br />removed. <br />• The erosive effect of clear water return is <br />constant. <br />• Dry periods lead to nearly irreversible channel <br />narrowing through vegetation encroachment. <br />Our Conclusions on Trends in <br />River Form: <br />• We see consistent evidence from field <br />data that there is an ongoing trend in <br />the habitat reach toward a narrower, <br />more vegetated, coarser, deeper <br />channel. <br />• This trend is progressing downstream. <br />• Habitat loss is continuing. <br />16 <br />