KEY
	Data
	ND	No Data (this includes data not collected and data not analyzed)
	Date
	7/19	Standard date (usually the third Saturday of the month)
	7/20	Sample was taken on a day other than the standard date
	Rivers and Tributaries
		Nashua Mainstem and Tributaries
		Nissitissit River and Tributaries
		North Nashua River and Tributaries
		South Nashua River and Tributaries
		Squannacook River and Tributaries