Maricopa County Lake Quality

Arizona, 14 lakes, average grade C (Fair)

Only 14 lakes in Maricopa County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Nla Lake (A) is the cleanest in the county.

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Quick Answers for Maricopa County

Cleanest lakes in Maricopa County →Cleanest lakes in Arizona →Safest swimming lakes in Arizona →

Planning a trip? Check special fishing regulations for Nla Lake — or check the official Arizona fishing regulations.

All Lakes in Maricopa County

Rank	Lake	Grade	Clarity	Phosphorus
1	Nla Lake	A	10 ft	9.4 µg/L
2	Nla Lake	C	5.6 ft	49.1 µg/L
3	Nla Lake	C	5.1 ft	38000 µg/L
4	Nla Lake	C	4 ft	39.9 µg/L
5	Saguaro Lake	C	3.9 ft	56 µg/L
6	Chaparral Park Lake	C	3 ft	37.5 µg/L
7	Canyon Lake	C	3.4 ft	53 µg/L
8	Alvord Park Lake	C	4.5 ft	42 µg/L
9	Red Mountain Lake	C	2.5 ft	38 µg/L
10	Apache Lake	C	7.7 ft	36 µg/L
11	Nla Lake	C	9 ft	67000 µg/L
12	Tempe Town Lake	D	1.7 ft	60.5 µg/L
13	Water Ranch Lake	D	1.6 ft	65 µg/L
14	Hidden Lake	D	-	90 µg/L