All Chicago-area rivers are in a falling mode this Thursday with Moderate Flooding continues on the Algonquin segment of the Fox River with Minor Flooding at LaSalle on the Illinois River. All other rivers are below flood.
Showers and thunderstorms are still forecast over our area this afternoon and evening, as a cold front works its way southeast across northern Illinois into Northwest Indiana (see Regional Weather radar Mosaic below). Heavy downpours in stronger storms could create localized flooding problems, as soils are saturated and rain will almost immediately produce runoff into already swollen creeks and ponds.
The National Weather Prediction Center still has the north-central portion of our area in the Slight Risk for flood-producing downpours, with the remainder of northeast Illinois and northwest Indiana in the Marginal Risk (yellow and green-shaded areas respectively on the map below).
Rivers in flood are displayed in light green on the headlined map and the Hydrologic Summary of river stages and flood forecast issued by the Chicago National Weather Service is provided below.
Hydrologic Summary
National Weather Service Chicago/Romeoville IL
730 AM CDT Thu May 28 2020
Location Flood Stage Time 24-hr Flood
Stage Today Change Forecast
North Branch Chicago River
Chicago (Pulaski Road 18.0 12.98 07 AM Thu -0.54
Des Plaines River
Russell 7.0 4.80 06 AM Thu -0.48
Gurnee 7.0 5.63 06 AM Thu -0.62
Lincolnshire 12.5 10.36 07 AM Thu -0.73
Des Plaines 15.0 12.61 07 AM Thu -1.21
River Forest 16.0 10.69 07 AM Thu -1.13
Riverside 7.5 5.42 07 AM Thu -0.58
Fox River
Algonquin Lock & Dam t 9.5 10.75 06 AM Thu -0.22 MODERATE
Montgomery 13.5 13.20 07 AM Thu -0.09
Dayton 12.0 10.40 07 AM Thu -0.17
East Branch Du Page River
Bolingbrook 19.5 15.80 06 AM Thu -0.37
West Branch Du Page River
Warrenville 11.5 8.29 07 AM Thu -0.20
Du Page River
Plainfield 12.0 7.73 07 AM Thu -0.28
Shorewood 6.5 3.29 07 AM Thu -0.16
Iroquois River
Rensselaer 12.0 5.85 06 AM Thu -0.18
Foresman 18.0 9.33 07 AM Thu -1.01
Chebanse 16.0 6.73 07 AM Thu -0.53
Iroquois 18.0 9.97 07 AM Thu -1.13
Sugar Creek
Milford 18.0 6.44 07 AM Thu -0.63
Kankakee River
Dunns Bridge 10.0 8.55 07 AM Thu -0.41
Kouts 11.0 9.53 07 AM Thu -0.37
Shelby 10.5 10.44 07 AM Thu -0.22
Momence 5.0 4.07 07 AM Thu -0.10
Wilmington 6.5 3.40 07 AM Thu -0.02
Thorn Creek
Thornton 10.0 3.62 06 AM Thu -0.01
Little Calumet River
Dyer 12.0 2.67 07 AM Thu -0.16
Munster (H 12.0 7.34 07 AM Thu -0.20
South Holland 16.5 7.86 07 AM Thu -0.20
Mazon River
Coal City 12.0 3.30 07 AM Thu -0.48
Vermilion River
Pontiac 14.0 4.92 07 AM Thu -0.39
Leonore 16.0 7.52 07 AM Thu -1.20
Upper Illinois River
Morris 16.0 10.26 07 AM Thu -0.40
Ottawa 463.0 461.36 05 AM Thu -0.06
La Salle 20.0 26.15 07 AM Thu -0.69 MINOR
S Branch Kishwaukee River
DeKalb 10.0 4.03 07 AM Thu -0.07
Kishwaukee River
Belvidere 9.0 5.32 06 AM Thu -0.75
Perryville 12.0 9.01 06 AM Thu -0.49
Pecatonica River
Shirland 12.0 10.64 07 AM Thu -0.30
Rock River
Rockton 10.0 6.98 06 AM Thu -0.18
Latham Park 9.0 7.13 06 AM Thu -0.21
Rockford (Auburn Stree 6.0 2.70 07 AM Thu -0.18
Byron 13.0 10.17 07 AM Thu -0.35
Dixon 16.0 12.19 06 AM Thu -0.37
