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 1001–1025 of 4,124

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
East Fork Grand River Watershed Site D-31 Ringgold County	18	2011	Low	Not Rated
East Fork Grand River Watershed Site D-36 Ringgold County	23	2008	Low	Not Rated
East Fork Grand River Watershed Site D-37 Ringgold County	26	2008	Low	Not Rated
East Fork Grand River Watershed Site D-40 Ringgold County	24	2008	Low	Not Rated
East Fork Grand River Watershed Site D-42 Ringgold County	26	2008	Low	Not Rated
East Fork Grand River Watershed Site D-48 Ringgold County	23	2011	Low	Not Rated
East Fork Grand River Watershed Site D-51 Ringgold County	19	2002	Low	Not Rated
East Fork Grand River Watershed Site D-53 Ringgold County	25	2003	Low	Not Rated
East Fork Grand River Watershed Site D-54 Ringgold County	23	2002	Low	Not Rated
East Fork Grand River Watershed Site D-55 Ringgold County	19	2010	Low	Not Rated
East Fork Grand River Watershed Site D-56 Ringgold County	23	2007	Low	Not Rated
East Fork Grand River Watershed Site D-58 Ringgold County	25	2005	Low	Not Rated
East Fork Grand River Watershed Site D-59 Ringgold County	24	2002	Low	Not Rated
East Fork Grand River Watershed Site D-60 Ringgold County	22	2010	Low	Not Rated
East Fork Grand River Watershed Site D-62 Ringgold County	21	2002	Low	Not Rated
East Fork Grand River Watershed Site D-63 Ringgold County	26	2003	Low	Not Rated
East Fork Grand River Watershed Site D-66 Ringgold County	23	2008	Low	Not Rated
East Fork Grand River Watershed Site D-69 Ringgold County	24	2008	Low	Not Rated
East Fork Grand River Watershed Site D-70 Ringgold County	24	2006	Low	Not Rated
East Fork Grand River Watershed Site D-72 Ringgold County	22	2002	Low	Not Rated
East Fork Grand River Watershed Site D-73 Ringgold County	23	2008	Low	Not Rated
East Fork Grand River Watershed Site D-74 Ringgold County	25	2002	Low	Not Rated
East Fork Grand River Watershed Site D-75 Ringgold County	26	2010	Low	Not Rated
East Fork Grand River Watershed Site D-78 Ringgold County	25	2007	Low	Not Rated
East Fork Grand River Watershed Site D-79 Ringgold County	25	2006	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.