Mesotrophic Lakes in North Dakota

20 mesotrophic lakes in North Dakota. Moderate nutrients, good water quality.

Most well-managed working lakes register as mesotrophic — the band that balances productivity with clarity. 20 lakes in North Dakota sit in the mesotrophic band. About 0% are deep (50+ ft); the rest are shallower basins where watershed management keeps nutrients from pushing the system into eutrophy.

Mesotrophic lakes tend to grade B or C on the LakeGrade rubric — the productive-but-clear band lines up with the middle of the letter grades.

#	Lake	County	Grade	Clarity	Depth	TSI
1	Lake Darling	Renville	A	4.9 ft	-	59
2	Wheaton Lake	Rolette	A	8.5 ft	-	48
3	Jarvis Lake Center	Rolette	A	7.7 ft	-	48
4	North Lemmon Lake	Adams	B	5.7 ft	-	49
5	Kota Ray Dam Lake	Williams	B	7.7 ft	-	46
6	Fort Totten Bay Lake	Benson	B	-	-	46
7	Lake Darling	Renville	C	9.8 ft	-	61
8	Lake Ashtabula	Barnes	C	3.4 ft	-	63
9	Lake Ashtabula	Barnes	C	6.6 ft	-	60
10	Spiritwood Lake	Stutsman	C	31 ft	-	49
11	Fordville Dam Lake	Grand Forks	C	4.4 ft	-	64
12	Lake Tschida	Grant	C	5.2 ft	-	53
13	Davis Dam Lake	Slope	C	7.5 ft	-	48
14	Arroda Lake	Oliver	C	6.7 ft	-	48
15	Harvey Dam Lake	Wells	C	5.4 ft	-	59
16	Lake Williams	Kidder	C	4.7 ft	-	46
17	Homme Dam Lake	Walsh	C	5.7 ft	-	60
18	Skjermo Lake	Divide	C	7.7 ft	-	45
19	Renwick Dam Lake	Pembina	C	3 ft	-	63
20	Arnegard Dam Lake	McKenzie	C	-	-	61

All mesotrophic lakes →Minnesota version →Wisconsin version →Illinois version →Michigan version →Iowa version →Ohio version →Pennsylvania version →New York version →Missouri version →Indiana version →South Dakota version →Florida version →Colorado version →North Carolina version →Vermont version →Texas version →Oregon version →Arkansas version →Oklahoma version →Kansas version →Nebraska version →Nevada version →Arizona version →Idaho version →Montana version →New Mexico version →Tennessee version →Alabama version →Virginia version →Kentucky version →Utah version →Washington version →Wyoming version →Georgia version →Massachusetts version →Ontario version →Québec version →All North Dakota lakes →

Source: EPA National Aquatic Resource Surveys, 2026.