Geochemical maps of the Upper Fal River

Variation in the distribution of contaminants in the Fal and Cowlands areas are masked on the "all creeks" maps because of the extremely high levels of contamination in the Restronguet Creek area. However, when we examine the Fal and Cowlands maps a greater degree of variation is observed. The upper parts of the River Fal upstream from the confluence with the Truro River have the lowest levels of contamination observed. Arsenic values increase in Cowlands Creek, along the King Harry reach, and in Channals Creek and around Turnaware Point. Cowlands Creek and Lamouth Creek both have elevated levels of copper and zinc as well as arsenic. There is also a very localised area of elevated copper and tin just to the south of Channals Creek. The log plots also reveal that this localised area has elevated arsenic, tin and copper. Lead concentrations are elevated in Cowlands Creek and in Lamouth Creek. Tin distribution is more variable. The uppermost part of the River Fal has the lowest levels of contamination, with high values to the south of the confluence between the Truro River and the River Fal. The highest levels of tin are in Cowlands Creek and in Lamouth Creek.

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Linear Values				Logarithmic Values
		Arsenic				Arsenic
		Copper				Copper
		Lead				Lead
		Tin				Tin
		Zinc				Zinc