These data were collected by the Ministry of Forests and Range as part of hydrology research projects. The precipitation measurements were meant to quantify the amount of water available to contribute to runoff and therefore the timing of the occurrence may not coincide exactly with the precipitation event. In other words, snowfall events are recorded when the snow melts, not when it falls. Also, the rain gauges may not meet Environment Canada standards for wind protection or clearances form surrounding objects.
Chinukundl Creek, Queen Charlotte Islands 2000 to present
Lat 53 19 10 Long 131 58 20 Elevation 140 m
Gregory Creek, Queen Charlotte Islands 2003 to present
Lat 53 24 00 Long 132 26 50 Elevation 270 m
Lat 49 12 06 Long 123 59 44 Elevation 120 m
Frequency (IDF) “curves” illustrate how the quantity of rain varies with the length of the precipitation
event and its return period. The return
period is defined as the inverse of the probability of the event. For example, in
IDF curves are commonly used, along with other data, in the design of drainage structures in order to ensure that they are capable of handling peak runoff events. The following links illustrate some of the IDF curves developed by Environment Canada for stations within the Coast Forest Region.