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Table 3: Estimates of floods at Boscastle

Year Peak discharge Return period Remarks Year Peak discharge Return period Remarls
2004 179 357 Return period rounded up to 400 years 2004 230 7588 Return period based on rainfall frequency & SMD
1958 90 128 Wrong bridge section used 1958 75 75
1963 60 78 1894 54 45
1950 40 56 1950 48 33
1952 35 44 This flood did not occur 1882 45 26
1932 33 36 Only minor overflow 1940s 43 21 Exact date unknown
1926 40? 18 Water level high, exact height unknown
1827 30 30 Not included in this present study because of 54 year gap in record 1903 40 16
1963 37 14 Road Br. Partly blocked, low rainfall intensity