Grade Stabilization Dams
1,146 dams in the US serve this purpose.
| Dam Name | Hazard | Height | Built | Type | State |
|---|---|---|---|---|---|
| Hiatt Dam Macon | Low Hazard | 26 ft | 2003 | Earth | Missouri |
| Hiatt Lake Dam Platte | Low Hazard | 33 ft | 1978 | Earth | Missouri |
| Hickson Clay | Low Hazard | 10 ft | — | Stone | Minnesota |
| Higgs Lake Dam Henry | Low Hazard | 21 ft | 1979 | Earth | Missouri |
| Hilgedick Lake Dam Lafayette | Low Hazard | 25 ft | 1974 | Earth | Missouri |
| Hinton Lake Dam No 1 Henry | Low Hazard | 23 ft | 1974 | Earth | Missouri |
| Hinton Lake Dam No 2 Henry | Low Hazard | 15 ft | 1977 | Earth | Missouri |
| Hiser Dam No 1 Ray | Low Hazard | 33 ft | 1992 | Earth | Missouri |
| Hochstetler Dam Macon | Low Hazard | 28 ft | 2005 | Earth | Missouri |
| Holly 10 Murray | Low Hazard | 35 ft | 2023 | Earth | Minnesota |
| Holt Dam Scotland | Low Hazard | 26 ft | 1991 | Earth | Missouri |
| Homer Lawrance Structure Dam Nodaway | Low Hazard | 25 ft | 1980 | Earth | Missouri |
| Homer Medsker Structure Dam Nodaway | Low Hazard | 25 ft | 1968 | Earth | Missouri |
| Hood Lake Dam Boone | Low Hazard | 25 ft | 1968 | Earth | Missouri |
| Hooper Dam DeKalb | Low Hazard | 25 ft | 1984 | Earth | Missouri |
| Hoover-Frankum Watershed Dam A- 12 Nodaway | Low Hazard | 19 ft | 1966 | Earth | Missouri |
| Hoover-Frankum Watershed Dam A-23 Nodaway | Low Hazard | 30 ft | 1966 | Earth | Missouri |
| Hoover-Frankum Watershed Dam B-23 Nodaway | Low Hazard | 33 ft | 1966 | Earth | Missouri |
| Hoover-Frankum Watershed Dam D-10 Nodaway | Low Hazard | 32 ft | 1965 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-13 Nodaway | Low Hazard | 37 ft | 1973 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-25 Nodaway | Low Hazard | 31 ft | 1973 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-27 Nodaway | Low Hazard | 27 ft | 1973 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-32 Nodaway | Low Hazard | 31 ft | 1973 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-44 Nodaway | Low Hazard | 29 ft | 1975 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-49 Nodaway | Low Hazard | 34 ft | 1974 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-51 Nodaway | Low Hazard | 34 ft | 1974 | Earth | Missouri |
| Hoover-Frankum Watershed Dam Lt-53 Nodaway | Low Hazard | 31 ft | 1974 | Earth | Missouri |
| Hopp Dam (Lower Site) Mills | Low Hazard | 30 ft | 2005 | Earth | Iowa |
| Hopp Dam (Upper Site) Mills | Low Hazard | 36 ft | 2005 | Earth | Iowa |
| Horner Lake Dam Boone | Low Hazard | 26 ft | 1980 | Earth | Missouri |
| Houck Dam Walworth | Low Hazard | 26 ft | 1980 | Earth | South Dakota |
| Houston Dam Nodaway | Low Hazard | 34 ft | 1995 | Earth | Missouri |
| Houston Lake Dam Lafayette | Low Hazard | 25 ft | 1965 | Earth | Missouri |
| Howard Watson Structure Dam Nodaway | Low Hazard | 26 ft | 1959 | Earth | Missouri |
| Hubbartt Dam Schuyler | Low Hazard | 33 ft | 1992 | Earth | Missouri |
| Hughes Dam Poweshiek | Low Hazard | 27 ft | 2010 | Earth | Iowa |
| Hugh M. Wallace Dam Holt | Low Hazard | 33 ft | 2003 | Earth | Missouri |
| Hunt Dam Delaware | Low Hazard | 26 ft | 2008 | Earth | Iowa |
| Hunziker Lake Dam No 2 Knox | Low Hazard | 25 ft | 1975 | Earth | Missouri |
| Hutcherson Lake Dam Henry | Low Hazard | 24 ft | 1977 | Earth | Missouri |
| Hutchinson Fresh Water Westmoreland | Low Hazard | 65 ft | — | Earth | Pennsylvania |
| Hutchison Dam Macon | Low Hazard | 27 ft | 1998 | Earth | Missouri |
| Indian Creek Watershed Site 2 Pottawattamie | High Hazard | 65 ft | 1975 | Earth | Iowa |
| Indspec No 2 Butler | High Hazard | 27 ft | 1950 | Earth | Pennsylvania |
| Indspec No 3 Butler | High Hazard | 59 ft | 1975 | Earth | Pennsylvania |
| Ingells & Ervin Dam Nodaway | Low Hazard | 26 ft | 2001 | Earth | Missouri |
| Iowa Gun Dog Dam Clarke | Low Hazard | 29 ft | 2020 | Earth | Iowa |
| Isabella Fresh Water Fayette | Significant Hazard | 122 ft | — | Earth | Pennsylvania |
| Jackie Hague Mercer | Low Hazard | 29 ft | 1997 | Earth | Missouri |
| Jackie Hague Dam Mercer | Low Hazard | 27 ft | 1997 | Earth | Missouri |