Do you know how much of your property, campus, or office complex is covered by asphalt or concrete? Discover the crucial role of high-resolution aerial photogrammetry in assessing such impervious surfaces, vital for effective stormwater management. This presentation delves into how municipalities leverage the 2D planimetric mapping of man-made and natural features derived from aerial orthoimagery to support sustainable funding strategies. One leading example is stormwater utility fee programs, which charge businesses and residences a fee proportional to the impervious surface existing on their properties. Accuracy is the name of the game, and high-res orthos with high horizontal (x,y) accuracy is the tool of choice by municipalities to avoid billing disputes and lawsuits. Join us to gain insights into the evolving landscape of stormwater management and the pivotal role that aerial photogrammetry plays in reducing flood risks to our communities.