This paper examines the impact Hurricane Isabel had on the Chesapeake Bay region with respect to flooding though the analysis of the observed and predicted CO-OPS water levels along with the water level output of NOAA's SLOSH model for eight locations in the bay area. Through comparing the CO-OPS observed storm surge with the SLOSH model's predicted storm surge, the overall accuracy of the SLOSH model was determined. With the exception of three difficult-to-model locations, the SLOSH model analyzed was found to be fairly accurate. Contributing factors to the storm surge such as wind direction and strength, pressure, and location of the hurricane help to explain why the SLOSH program predicted the values it did and why the observed water levels turned out to be what they were. The three stations which were least accurately modeled were discussed, focusing on their locations as a reason for the inaccuracies. Ideas for ways to improve the SLOSH model program were given.