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. . At Breach 3 on 21 May, we estimated water velocity at the net mouth using flow velocities from breach transect measurements taken with the Marsh-McBirney flow meter. This was accomplished here and at other sites where net flow velocities were missing (N = five of 18 sites) by estimating net locations across transects via investigator recollections or photographs. Each net mouth velocity was then estimated by averaging the velocities from the three transect velocity measurements nearest the net. We validated this technique of estimating net flows at sites, breaches, and dates by comparing both transect data and Marsh-McBirney flow measurements at net mouths when both were collected at sites. Using transect data to estimate net mouth flow velocities was accurate, as transect data measurements at Thunder Ranch were on average only 5.4% (-20.4 to 31.3%, n = 5) higher than the actual net mouth flow velocities. Similarly, transect measurements at Stewart Lake were only 4.5% higher (2 and 7%, n = 2) than net mouth flow velocities measured directly with the Marsh-McBirney flow meter. Transect measurements to estimate net mouth flow velocities at Bonanza Bridge were on average 11.1 % less (-17.7 to 2.2%, n = 4) than Marsh- McBirney flow meter readings. Accuracy of the transect method to estimate average flow velocity at net mouths led us to use this method for the five occasions (one at Thunder Ranch [Breach 3], two at Stewart Lake, and two at Bonanza Bridge [Breach 3]) when Marsh-McBirney flow meter reading in net mouths were not available. Samples from two nets from each breach were designated specifically to obtain well- preserved larvae in 95% ethanol. Remaining samples were picked for beads to estimate bead densities (ethanol dissolves beads) and the remainder of the sample was preserved in alcohol and later examined for fish larvae. All larval fish collected in 2006 were examined at the Larval Fish . . . . . . . . . 28