1. In this Regulation, “Authority” means the Lower Trent Region Conservation Authority; “building” means a building or structure of any kind; “drainage area” means, for any point, the area that contributes runoff to that point; “fill” means any material used or capable of being used to raise, lower or in any way affect or alter the contours of the ground, whether on a permanent or temporary basis and whether it originated on the site or elsewhere; “fill line” means any line designated as such on the maps referred to in the Schedules; “regional storm” means, (a) for the main channels of Rice Lake and the Trent River, the rainfall, snowmelt, or the combination of rainfall and snowmelt that would produce the water surface elevations above Canadian Geodetic Datum as set out in Table 1, and (b) for all watercourses except the main channels of Rice Lake and the Trent River, a storm that produces in a twelve-hour period, (i) in a drainage area of twenty-five square kilometres or less, a rainfall that has the distribution set out in Table 2, or (ii) in a drainage area of more than twenty-five square kilometres, a rainfall such that the number of millimetres of rain referred to in each case in Table 2 shall be modified by the percentage amount shown in Column 2 of Table 3 opposite the size of the drainage area set out opposite thereto in Column 1 of Table 3: TABLE 1   WATER SURFACE ELEVATIONS  Location

Elevation (Metres)


Rice Lake

187.9


Trent River:

 


below Dam #1 (Trenton)

77.2


below Dam #2 (Sydney)

81.3


below Dam #3 (Glen Miller)

87.7


below Dam #4 (Batawa)

95.7


below Dam #5 (Trent)

101.7


below Dam #6 (Frankford)

107.9


below Dam #7 (Glen Ross)

113.5


below Dam #8 (Meyers)

117.9


below Dam #9 (Hagues Reach)

128.1


below Dam #10 (Ranney Falls)

143.3


below Dam #11 (Campbellford)

148.3


below Dam #12 (Crowe Bay)

154.3


below Dam #13 (Healey Falls)

175.5


below Dam #14 (Hastings)

186.7 TABLE 2   DISTRIBUTION OF RAIN  15 mm of rain in the first hour


20 mm of rain in the second hour


10 mm of rain in the third hour


3 mm of rain in the fourth hour


5 mm of rain in the fifth hour


20 mm of rain in the sixth hour


43 mm of rain in the seventh hour


20 mm of rain in the eighth hour


23 mm of rain in the nineth hour


13 mm of rain in the tenth hour


13 mm of rain in the eleventh hour


8 mm of rain in the twelfth hour TABLE 3  Column 1

Column 2


Drainage Area (in square kilometres)

Percentage


26 to 50 both inclusive

97


51 to 75 both inclusive

94


76 to 100 both inclusive

90


101 to 150 both inclusive

87


151 to 200 both inclusive

84


201 to 250 both inclusive

82


251 to 375 both inclusive

79


376 to 500 both inclusive

76


501 to 750 both inclusive

74


751 to 1000 both inclusive

70


1001 to 1250 both inclusive

68


1251 to 1500 both inclusive

66


1501 to 1800 both inclusive

65


1801 to 2100 both inclusive

64


2101 to 2300 both inclusive

63


2301 to 2600 both inclusive

62


2601 to 3900 both inclusive

58


3901 to 5200 both inclusive

56


5201 to 6500 both inclusive

53


6501 to 8000 both inclusive

50 “river”, “lake”, “creek”, “stream” or “watercourse” means any river, lake, creek, stream or watercourse under the jurisdiction of the Authority. R.R.O. 1990, Reg. 156, s. 1.