Astronomical Tide-Water Level Statistics 



Based on Sine Curve Fit to Predicted 



High Tides -Lewes, Delaware (1967) 



(1967 data) 



(I) (2) 



Elevation above MLW Number of Hours Fraction of Time 



(z) feet per year P(Z>z) 



2.60000 3539.20154 O.40420 



2.70000 3356.93503 .38338 



2.80000 3162.84706 .36122 



2.90000 2966.16526 .33875 



3.00000 2750.04381 .31407 



3.10000 2530.95381 .28905 



3.20000 2307.68068 .26355 



3.30000 2096.87811 .23948 



3.40000 1897.91885 .21675 



3.50000 1700.23383 .19418 



3.60000 1537.76783 .17562 



3.70000 1368.22078 .15626 



3.80000 1217.94634 .13910 



3.90000 1071.54007 .12238 



4.00000 934.13571 .10668 



4.10000 784,60798 .08961 



4.20000 670.06012 .07652 



4.30000 560.42541 .06400 



4.40000 462.52767 .05282 



4.50000 370.94314 .04236 



4.60000 295.40660 .03374 



4.70000 223.57539 .02553 



4.80000 169.21023 .01932 



4.90000 129.63847 .01481 



5.00000 92.51881 .01057 



5.10000 67.31568 .00769 



5.20000 41.81988 .00478 



5.30000 31.44437 .00359 



5.40000 18.56210 .00212 



5.50000 8.99619 .00103 



5.60000 3.17861 .00036 



5.70000 0.92306 .00011 



5.80000 0.00064 .00000 



(1) Number of hours per year water level above given elevation 



(2) Fraction of time water level above given elevation 



8-19 



