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 2901–2925 of 3,759

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
East Fork Grand River Watershed Site A-31 Union County	21	2005	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-122 Ringgold County	26	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-116 Ringgold County	28	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 A102 Ringgold County	26	2010	Low	Not Rated
East Fork Grand River Site B-61 Ringgold County	33	2010	Low	Not Rated
East Fork Big Cr Wtrshd Site Z-6 Decatur County	18	2003	Low	Not Rated
East Fork Big Cr Wtrshd Site Z-5-2 Decatur County	23	2003	Low	Not Rated
East Fork Big Cr Watershed Site Z-6 Decatur County	20	1990	Low	Not Rated
East Fork Big Cr Watershed Site Z-5-1 Decatur County	27	1995	Low	Not Rated
East Fork Big Cr Watershed Site Z-4 Decatur County	20	1995	Low	Not Rated
East Fork Big Cr Watershed Site Z-2 Decatur County	21	1990	Low	Not Rated
East Fork Big Cr Watershed Site Z-1 Decatur County	20	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-6 Decatur County	24	1995	Low	Not Rated
East Fork Big Cr Watershed Site E-5 Decatur County	14	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-4 Decatur County	16	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-3 Decatur County	18	1995	Low	Not Rated
East Fork Big Cr Watershed Site E-2 Decatur County	18	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-18 Decatur County	23	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-17 Decatur County	23	1995	Low	Not Rated
East Fork Big Cr Watershed Site E-16 Decatur County	18	1992	Low	Not Rated
East Fork Big Cr Watershed Site E-15 Decatur County	19	1990	Low	Not Rated
East Fork Big Cr Watershed Site E-14 Decatur County	22	1990	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.