PT - JOURNAL ARTICLE AU - Richter, Klaus O. TI - A Simple Gauge for Water-Level Maxima and Minima AID - 10.3368/er.15.1.60 DP - 1997 Jun 20 TA - Ecological Restoration PG - 60--63 VI - 15 IP - 1 4099 - http://er.uwpress.org/content/15/1/60.short 4100 - http://er.uwpress.org/content/15/1/60.full