| 32.0 | An unbelievable flood is in progress. Flood levels are at record height. Homes located on the slopes of hills begin to flood. Flood waters wash out railroad near Williams and all county bridges. People in the flood plain have lost everything. |
| 28.0 | Flood waters are nearing a record level. Flooding is at an almost unheard of levels. This is the highest level since March 1913. Persons in flood plain areas have lost everything. |
| 24.0 | Flood waters are approaching railroad tracks near Williams. This is the greatest flood since January 1937. A serious flood is in progress. Evacuations are necessary along local streams and on low knolls. High water isolates many rural persons. |
| 22.0 | A major flood is in progress. The river is at its highest level since May 1961. Evacuation of residents on low knolls may be necessary. Local roads are underwater by 3 to possibly 15 feet. |
| 20.0 | Flood levels approach a serious level. Evacuations are necessary for those on lowest knolls. Flood waters cover nearly the entire flood plain. |
| 18.5 | State Road 450 west of Williams beings to flood just west of Huron and Williams Road. Local travel between Williams and Shoals must take long detours. The only land route to Williams is via Ridge Road from the north. High waters surrounds a few residents near Martin State Forest. Extensive flooding occurs in Chase Ripple area downstream of Williams. |
| 16.0 | Local residents in a few river cabins may have to evacuate. Backwater affects some residents along local streams. Extensive flooding is in progress. Dillman Road (CR 1000 W) immediately north of Indiana 450 just west of Williams is flooded by as much as 2 feet of water. |
| 14.0 | Flooding approaches local residents located on low flood plain areas on local streams. State Road 450 just east of Williams is extensively flooded and becomes a recreational area for local geese and ducks. Only the highest campgrounds at Williams Dam are out of water. Huron and Williams Road (Williams Wooden Bridge road) flooded immediately south of Indiana 450 just west of Williams. Dillman Road (CR 1000 W) immediately north of Indiana 450 begins to flood. Indiana 450 begins to flood at Coxton Road. |
| 12.0 | River begins to be noticeable as water backs up in local streams. State Road 450 closes in several locations. Road to Williams Bridge begins to flood. Higher campgrounds flood. Most roads in the flood plain are impassable above this level. Huron-Williams Road begins to flood south of Port Williams Road. |
| 11.0 | During the late March 2008 flood, the Bedford Times reported the following County roads still flooded; River Road, entire road; Bartlettsville Road, by the bridge and in the bottoms; Judah-Logan Road, by the bridge; Logan Bottoms, the gravel part; Donica Church Road, between Logan Bottom and the hill; Peerless Road, by Mica Metals; Little Salt Creek Run; Stumphole Bridge Road, near Indiana 450; Huron-Williams Road; Lawrencport Road; Rivervale Road and Earl Road. |
| 10.0 | State Road 450 near Williams and County Road 400 South closed by high water. Lowest campground begins to flood. Additional agricultural flooding occurs. |
| 9.5 | Campground begins to flood at Williams Dam. |
| 9.3 | Flood crest of August 2009. State Road 450 near Williams and South Chase Riffle Road located about 2 miles downstream of Williams flooded at this level. Flooding of low agricultural land in Lawrence and Martin counties. |
| 9.2 | State Road 450 just east of Williams is closed by high water. Low agricultural grounds flood. |
| 8.9 | Water now begins to cover State Road 450 at the Public Access Site just east of Williams. |
| 8.6 | Water is on State Road 450 at the railroad trestle just east of Williams. |
| 8.0 | Flood stage at Williams. Bottomlands are beginning to flood. Stumphole road...South Chase Riffle Road and possibly other rural county roads in Western Lawrence County flood. |
| 7.5 | Lowest agricultural lands begin to flood. County Road 400 S (Stumphole Road) near Williams begins to flood. Water is 6 to 10 inches deep and covers about 150 yards of the road. Water on either side of the road could be 12 feet deep. |
| 7.3 | State Road 450 at the railroad trestle just east of Williams was covered with high water on the morning of May 16, 2008. This water was too deep for safe passage of cars. On the morning of May 19, 2008...water was off State Road 450...but still on nearby Stumphole Road. River reading was 7.6 feet. |
| 6.5 | Low private campgrounds begin to flood. |
| 4.7 | Current is too strong for most boats. |
