Three bands of multispectral video imagery (0.543-0.552μm, 0.644-0.656μm, 0.815-0.827μm) were acquired from nine lakes in Vigo County, Indiana on l8 May 1988 using a multispectral video system. Eleven different scenes covering the nine lakes were digitized and used in computer-assisted analysis of secchi transparency. Individual band data and a yellow-green/red ratio band were correlated with secchi disc measurements taken concurrently with aerial video acquisition. The significant correlations (0.05 level) between the video data and secchi disc depths, were —0.83 and —0.91 for the red band (original and log) and 0.93 and 0.84 for the yellow-green/red ratio (original and log).