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 151–175 of 4,124

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
Westside Subwatershed Site 2-3 Ida County	30	1985	Low	Not Rated
Westside Subwatershed Site 2-2 Ida County	31	1985	Low	Not Rated
Westside Subwatershed Site 2-1 Ida County	40	1985	Low	Not Rated
West Lenox Reservoir Dam Taylor County	25	1913	Significant	Not Rated
West Lakes Office Park Dam Polk County	41	1990	High	Satisfactory
West Lake Dam (Mahaska Co) Mahaska County	32	1989	Significant	Satisfactory
West Lake Dam Clarke County	58	1935	Significant	Satisfactory
West Lake Dam Des Moines County	21	1921	Low	Not Rated
West Fork One Subwatershed Site 4-4300 Woodbury County	36	1955	Low	Not Rated
West Fork One Subwatershed Site 4-4050 Woodbury County	29	1955	Low	Not Rated
West Fork One Subwatershed Site 2-10110 Woodbury County	29	1955	Low	Not Rated
West Fork One Subwatershed Site 1-5000 Woodbury County	30	1955	Low	Not Rated
West Fork Big Cr Wtrshd Site W-30 Ringgold County	21	2005	Low	Not Rated
West Fork Big Cr Wtrshd Site S-6 Decatur County	21	2003	Low	Not Rated
West Fork Big Cr Wtrshd Site B-39 Decatur County	26	2003	Low	Not Rated
West Fork Big Cr Wtrshd Site B-38 Decatur County	20	—	Low	Not Rated
West Fork Big Cr Wtrshd Site B-37 Decatur County	22	2005	Low	Not Rated
West Fork Big Cr Wtrshd Site B-32 Decatur County	21	2003	Low	Not Rated
West Fork Big Cr Wtrshd Site B-182 Decatur County	22	2003	Low	Not Rated
West Fork Big Creek Wtrshd Site W-16 Ringgold County	26	2005	Low	Not Rated
West Fork Big Creek Wtrshd Site B-11 Ringgold County	23	2005	Low	Not Rated
West Fork Big Creek Watershed Site W-8 Ringgold County	24	2000	Low	Not Rated
West Fork Big Creek Watershed Site W-6 Ringgold County	23	2000	Low	Not Rated
West Fork Big Creek Watershed Site W-37 Ringgold County	22	2000	Low	Not Rated
West Fork Big Creek Watershed Site W-35 Ringgold County	23	2001	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.