The San Clemente Dam on the Carmel River was removed in 2015 . We analyzed the grain size distribution changes on the river on one site upstream and six sites downstream of the damsite, as part of an ongoing study monitoring a total of 10 sites since 2013 (East et al., 2023). Trends from this data indicate that the geomorphic changes observed downstream of the dam are predominantly dependent on high flows. This study contributes to field data collection and analyzes fresh pebble count data for 2023 from one control reach above the dam removal and six reaches downstream of the removal. Given that the Carmel River had a peak flow of 11,000 CFS during the 2022-2023 winter, pebble counts from 2023 offer the opportunity to continue studying the stream system’s geomorphic response to high flows. To study spawning gravel availability, we applied the criteria of Smith et al (2021), who used grains within 32mm and 90mm to study spawning gravel abundance, then calculated the average percent of spawning gravel at each reach. We used the same analysis method to assess changes in fines and cobbles, where in this study cobbles are more accurately the grains that are too large to be productive spawning gravel according to Smith et al. (2021)’s analysis. Fines are classified as grains less than 2mm from Wentworth (1922) and cobbles as sediment greater than 64 mm. However, for the purpose of this study, we have considered cobbles as grain sizes too large to contribute to the spawning gravel range of 32mm to 90 mm according to Smith et al. (2021). Therefore, we have calculated cobbles as greater than 90mm, but acknowledge that cobbles are defined as sediment greater than 64mm by Wentworth (1922). Downstream of the dam, the average percent spawning gravel increased in four of the six reaches, average percent fines decreased for four of the six reaches, and average percent cobble increased in two reaches, decreased in the three, and showed no change in two reaches. At the control reach site, the percent spawning gravel decreased slightly, the percent fines decreased, and the percent cobble increased significantly. We found that the high flows of the past year coincided with an average increase in sediment size across reaches downstream of the dam. While percent spawning gravel increased, we were not confident in drawing conclusions about the effect of this year’s high flows on spawning gravel.