Freshwater and Saline Loads of Dissolved Inorganic Nitrogen to Hood Canal and Lynch Cove, Western Washington

Scientific Investigations Report 2006–5106

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5106

Table 5. Freshwater and saline loads of dissolved inorganic nitrogen to upper and lower layers of Hood Canal, western Washington.

[Abbreviations: DIN, dissolved inorganic nitrogen; MT/yr, metric ton per year; <, less than]

	DIN loading to upper layer (MT/yr)		Percentage of total to surface layer
	Average	Standard deviation	Percentage of total to surface layer
Direct atmospheric wet deposition	30	11	4
Subbasins
Surface streamflow	493	170	72
Ground water	138	77	20
Point source	1	1	.1
Shallow shoreline septic systems	26	15	4
Total	688
	DIN loading to lower layer (MT/yr)
	Range
Saline inputs	10,100 – 34,000
Fish carcasses	<22

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