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 851–875 of 3,759

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
East Fork Big Cr Wtrshd Site Z-6 Decatur County	18	2003	Low	Not Rated
East Fork Grand River Site B-61 Ringgold County	33	2010	Low	Not Rated
East Fork Grand River Watershed Site A102 Ringgold County	26	2010	Low	Not Rated
East Fork Grand River Watershed Site A-104 Ringgold County	29	2007	Low	Not Rated
East Fork Grand River Watershed Site A-116 Ringgold County	28	2010	Low	Not Rated
East Fork Grand River Watershed Site A-121 Ringgold County	28	2010	Low	Not Rated
East Fork Grand River Watershed Site A-122 Ringgold County	26	2010	Low	Not Rated
East Fork Grand River Watershed Site A-30 Union County	22	2005	Low	Not Rated
East Fork Grand River Watershed Site A-31 Union County	21	2005	Low	Not Rated
East Fork Grand River Watershed Site A-32 Union County	29	2005	Low	Not Rated
East Fork Grand River Watershed Site A-34 Union County	27	2008	Low	Not Rated
East Fork Grand River Watershed Site A-35 Union County	25	2011	Low	Not Rated
East Fork Grand River Watershed Site A-36 Union County	22	2001	Low	Not Rated
East Fork Grand River Watershed Site A-37 Union County	24	2005	Low	Not Rated
East Fork Grand River Watershed Site A-40 Union County	24	2005	Low	Not Rated
East Fork Grand River Watershed Site A-46 Ringgold County	21	2001	Low	Not Rated
East Fork Grand River Watershed Site A-49 Ringgold County	24	2004	Low	Not Rated
East Fork Grand River Watershed Site A-51 Ringgold County	26	2001	Low	Not Rated
East Fork Grand River Watershed Site A-52 Ringgold County	23	2002	Low	Not Rated
East Fork Grand River Watershed Site A-53 Union County	23	2008	Low	Not Rated
East Fork Grand River Watershed Site A-54 Union County	26	2008	Low	Not Rated
East Fork Grand River Watershed Site A-55 Union County	22	2008	Low	Not Rated
East Fork Grand River Watershed Site A-60 Ringgold County	27	2001	Low	Not Rated
East Fork Grand River Watershed Site A-64 Ringgold County	24	2001	Low	Not Rated
East Fork Grand River Watershed Site A-67 Ringgold County	21	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.