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 1626–1650 of 3,759

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
Mill Picayune Watershed Site P-79-3 Shelby County	33	1993	Low	Not Rated
Mill Picayune Watershed Site P-79-2 Shelby County	50	1986	Low	Not Rated
Mill Picayune Watershed Site P-79-1 Shelby County	46	1964	Low	Not Rated
Mill Picayune Watershed Site P-64-1 Shelby County	48	1986	Low	Not Rated
Mill Picayune Watershed Site P-6 Shelby County	45	1985	Low	Not Rated
Mill Picayune Watershed Site P-57-1 Shelby County	44	1975	Low	Not Rated
Mill Picayune Watershed Site P-47-4 Shelby County	47	1978	Low	Not Rated
Mill Picayune Watershed Site P-47-3 Shelby County	38	1978	Low	Not Rated
Mill Picayune Watershed Site P-47-2 Shelby County	36	1975	Low	Not Rated
Mill Picayune Watershed Site P-47-1 Shelby County	25	1961	Low	Not Rated
Mill Picayune Watershed Site P-41-1 Harrison County	29	1984	Low	Not Rated
Mill Picayune Watershed Site P-4-1 Harrison County	29	1994	Low	Not Rated
Mill Picayune Watershed Site P-4 Shelby County	35	1995	Low	Not Rated
Mill Picayune Watershed Site P-39-2 Shelby County	40	1986	Low	Not Rated
Mill Picayune Watershed Site P-39-1 Harrison County	51	1989	Low	Not Rated
Mill Picayune Watershed Site P-33-1 Harrison County	45	1965	Low	Not Rated
Mill Picayune Watershed Site P-3 Shelby County	43	1993	Low	Not Rated
Mill Picayune Watershed Site P-1 Shelby County	41	1984	Low	Not Rated
Mill Picayune Watershed Site N-38-1 Shelby County	32	1964	Low	Not Rated
Mill Picayune Watershed Site N-3 Harrison County	42	1973	Low	Not Rated
Mill Picayune Watershed Site N-28-1 Shelby County	38	1972	Low	Not Rated
Mill Picayune Watershed Site N-27-1 Shelby County	29	1972	Low	Not Rated
Mill Picayune Watershed Site N-14-2 Shelby County	43	1975	Low	Not Rated
Mill Picayune Watershed Site N-13-2 Harrison County	40	1961	Low	Not Rated
Mill Picayune Watershed Site N-13-1 Harrison County	31	1965	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.