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Sixty-six cross sections on the Colorado River downstream from the Paria and Little Colorado Rivers were monitored from June 1992 to February 1994 to provide data to evaluate the effect of releases from Glen Canyon Dam on channel sand storage and for development of multidimensional flow and sediment-transport models. Most of the network of monumented cross sections was established and first measured June-September 1992 and remeasured four times between then and January-February 1994. Each measurement consisted of 10 passes across the section, and data presented are the mean section and the standard deviation from the mean. Measured depths were converted to bed elevations using water-surface elevations measured or estimated for each reach. A line marked at regular intervals was strung across the river between the section end points and used to provide horizontal position control. A Wilcoxon rank-sum test was applied to the data, and bed-elevation differences between successive measurements that were statistically significant at the 5-percent significance level were identified and used to compute the difference in cross-sectional area from measurement to measurement. This report presents the data from the five measurements made during the reporting period in graphical form and describes the electronic form of the data. Bed-elevation differences and the computed/? value from the Wilcoxon rank-sum test are included in electronic form, and the format of the electronic files is described in the report.

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