2025 12 19 Stormwater Report Rev 1

Existing Conditions Proposed Conditions Difference Time 2-Year 10-Year 100-Year 2-Year 10-Year 100-Year 2-Year 10-Year 100-Year (Min) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) (CFS) 762 2.104 3.412 6.015 2.067 3.378 5.988 -0.037 -0.034 -0.028 768 1.836 2.974 5.239 1.804 2.945 5.216 -0.031 -0.029 -0.023 774 1.631 2.641 4.649 1.604 2.616 4.629 -0.027 -0.025 -0.020 780 1.493 2.415 4.249 1.468 2.393 4.231 -0.025 -0.022 -0.018 786 1.354 2.189 3.848 1.332 2.169 3.832 -0.022 -0.020 -0.016 792 1.226 1.981 3.481 1.206 1.963 3.467 -0.019 -0.018 -0.014 798 1.122 1.812 3.184 1.104 1.796 3.171 -0.018 -0.016 -0.013 804 1.034 1.670 2.932 1.018 1.655 2.921 -0.016 -0.014 -0.011 810 0.954 1.540 2.704 0.940 1.527 2.693 -0.015 -0.013 -0.010 816 0.874 1.410 2.474 0.861 1.398 2.465 -0.013 -0.012 -0.009 822 0.805 1.298 2.278 0.793 1.288 2.269 -0.012 -0.011 -0.009 828 0.760 1.225 2.149 0.749 1.215 2.141 -0.011 -0.010 -0.008 834 0.730 1.177 2.065 0.720 1.168 2.057 -0.011 -0.010 -0.008 840 0.708 1.142 2.002 0.698 1.133 1.995 -0.010 -0.009 -0.007 846 0.687 1.107 1.940 0.677 1.098 1.933 -0.010 -0.009 -0.007 852 0.665 1.071 1.877 0.655 1.063 1.870 -0.010 -0.009 -0.007 858 0.643 1.036 1.815 0.634 1.028 1.809 -0.009 -0.008 -0.006 864 0.621 1.000 1.753 0.613 0.993 1.747 -0.009 -0.008 -0.006 870 0.599 0.965 1.690 0.591 0.957 1.684 -0.008 -0.008 -0.006 876 0.577 0.929 1.627 0.569 0.922 1.622 -0.008 -0.007 -0.006 882 0.555 0.893 1.564 0.548 0.887 1.559 -0.008 -0.007

0.006 876 0.577 0.929 1.627 0.569 0.922 1.622 -0.008 -0.007 -0.006 882 0.555 0.893 1.564 0.548 0.887 1.559 -0.008 -0.007 -0.005 888 0.533 0.858 1.502 0.526 0.852 1.497 -0.007 -0.007 -0.005 894 0.511 0.822 1.440 0.504 0.816 1.435 -0.007 -0.006 -0.005 900 0.489 0.786 1.376 0.482 0.781 1.372 -0.007 -0.006 -0.005 906 0.467 0.751 1.314 0.461 0.745 1.310 -0.006 -0.006 -0.004 912 0.448 0.720 1.260 0.442 0.715 1.256 -0.006 -0.005 -0.004 918 0.435 0.700 1.224 0.429 0.694 1.220 -0.006 -0.005 -0.004 924 0.427 0.686 1.201 0.421 0.681 1.197 -0.006 -0.005 -0.004 930 0.421 0.677 1.183 0.415 0.672 1.180 -0.006 -0.005 -0.004 936 0.415 0.666 1.165 0.409 0.661 1.161 -0.006 -0.005 -0.004 942 0.408 0.656 1.148 0.403 0.651 1.144 -0.005 -0.005 -0.004 948 0.402 0.646 1.130 0.397 0.642 1.127 -0.005 -0.005 -0.004 954 0.396 0.636 1.112 0.391 0.631 1.108 -0.005 -0.005 -0.004 960 0.390 0.626 1.094 0.385 0.621 1.091 -0.005 -0.004 -0.003 966 0.384 0.616 1.077 0.379 0.612 1.074 -0.005 -0.004 -0.003 972 0.378 0.606 1.060 0.373 0.602 1.057 -0.005 -0.004 -0.003 978 0.371 0.596 1.042 0.366 0.592 1.038 -0.005 -0.004 -0.003 984 0.365 0.586 1.024 0.360 0.582 1.021 -0.005 -0.004 -0.003 990 0.359 0.576 1.006 0.354 0.572 1.003 -0.005 -0.004 -0.003 996 0.352 0.566 0.988 0.348 0.562 0.985 -0.004 -0.004 -0.003 1002 0.346 0.556 0.971 0.342 0.552 0.968 -0.004 -0.004 -0.003 1008 0.340 0.546 0.954 0.336 0.542 0.951 -0.004 -0.004 -0.003 1014 0.334 0.536 0.936 0.330 0.532 0.933

-0.004 -0.004 -0.003 1008 0.340 0.546 0.954 0.336 0.542 0.951 -0.004 -0.004 -0.003 1014 0.334 0.536 0.936 0.330 0.532 0.933 -0.004 -0.004 -0.003 4 of 24