Iowa Dams

4,124 dams tracked by the National Inventory of Dams

Total Dams

4,124

High Hazard

2.2%

Poor / Unsatisfactory

Average Age

46 yrs

Hazard Classification

High91 (2.2%)

Significant274 (6.6%)

Low3,759 (91.1%)

Condition Assessment

Satisfactory259 (6.3%)

Fair81 (2.0%)

Poor / Unsatisfactory25 (0.6%)

Not Rated3,759 (91.1%)

Federal

State

141

Local

1,938

Private

2,014

Tallest Dams

High Hazard Dams

Poor Condition Dams

All Dams in Iowa

Showing 1801–1825 of 4,124

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
Mill Picayune Watershed Site M-24-14 Shelby County	40	1961	Significant	Satisfactory
Mill Picayune Watershed Site M-24-12 Shelby County	37	1961	Low	Not Rated
Mill Picayune Watershed Site M-24-10 Shelby County	36	1964	Low	Not Rated
Mill Picayune Watershed Site M-2-3 Harrison County	39	1967	Low	Not Rated
Mill Picayune Watershed Site M-22-6 Shelby County	50	1978	Low	Not Rated
Mill Picayune Watershed Site M-22-3 Shelby County	37	1978	Significant	Satisfactory
Mill Picayune Watershed Site M-22-13 Shelby County	38	1978	Low	Not Rated
Mill Picayune Watershed Site M-22-12 Shelby County	45	1978	Low	Not Rated
Mill Picayune Watershed Site M-22-1 Shelby County	34	1978	Low	Not Rated
Mill Picayune Watershed Site M-2-2 Harrison County	45	1967	Low	Not Rated
Mill Picayune Watershed Site M-21-5 Shelby County	48	1980	Significant	Satisfactory
Mill Picayune Watershed Site M-21-1 Shelby County	36	1980	Significant	Not Rated
Mill Picayune Watershed Site M-2-1 Harrison County	61	1967	Low	Not Rated
Mill Picayune Watershed Site M-2 Crawford County	37	1984	Significant	Not Rated
Mill Picayune Watershed Site M-18-4 Shelby County	48	1978	Low	Not Rated
Mill Picayune Watershed Site M-16-6 Shelby County	44	1989	Low	Not Rated
Mill Picayune Watershed Site M-16-4 Shelby County	50	1961	Low	Not Rated
Mill Picayune Watershed Site M-16-2 Crawford County	36	1972	Low	Not Rated
Mill Picayune Watershed Site M-14-1 Shelby County	47	1975	Low	Not Rated
Mill Picayune Watershed Site M-11-4 Shelby County	50	1961	Low	Not Rated
Mill Picayune Watershed Site M-1 Crawford County	36	1980	Significant	Not Rated
Mill Picayune Watershed Site I-1 Harrison County	35	1984	Low	Not Rated
Mill Picayune Watershed Site G-1 Harrison County	34	1986	Low	Not Rated
Mill Picayune Watershed Site E-1 Harrison County	33	1969	Low	Not Rated
Mill Picayune Watershed Site D-3 Harrison County	42	1968	Low	Not Rated

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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.