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Conemaugh River at Johnstown

Critical Stages
23' - Action
28' - Flood
30' - Moderate
34' - Major

Latest Observation

Updated: 2:15 AM EST 12/15/25

Status: No Flooding

Stage: 1.5 ft

Flow: 0.203 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
2:15 AM 12/15 1.5 0.203
2:00 AM 12/15 1.49 0.199
1:45 AM 12/15 1.49 0.199
1:30 AM 12/15 1.49 0.199
1:15 AM 12/15 1.48 0.195
1:00 AM 12/15 1.49 0.199
12:45 AM 12/15 1.49 0.199
12:30 AM 12/15 1.49 0.199
12:15 AM 12/15 1.5 0.203
12:00 AM 12/15 1.5 0.203
11:45 PM 12/14 1.51 0.207
11:30 PM 12/14 1.51 0.207
11:15 PM 12/14 1.52 0.211
11:00 PM 12/14 1.53 0.215
10:45 PM 12/14 1.54 0.218
10:30 PM 12/14 1.54 0.218
10:15 PM 12/14 1.55 0.222
10:00 PM 12/14 1.55 0.222
9:45 PM 12/14 1.55 0.222
9:30 PM 12/14 1.56 0.226
9:15 PM 12/14 1.57 0.231
9:00 PM 12/14 1.58 0.235
8:45 PM 12/14 1.58 0.235
8:30 PM 12/14 1.58 0.235
8:15 PM 12/14 1.58 0.235
8:00 PM 12/14 1.59 0.239
7:45 PM 12/14 1.59 0.239
7:30 PM 12/14 1.59 0.239
7:15 PM 12/14 1.6 0.243
7:00 PM 12/14 1.6 0.243
Hydrograph for Conemaugh River at Johnstown
41.6' - Flood of record from 1889.
34' - Flood waters begin to reach the Horner Street Bridge.
33.5' - Approximate level of the FEMA 0.2 0X0P+0nnual Chance Flood level (500-year flood).
28' - Unprotected areas in the vicinity of the river will flood.
26' - High water levels should be monitored for contunued rises.
23.5' - Approximate level of the FEMA 1 0X0P+0nnual Chance Flood level (100-year flood).
22.5' - Flood waters begin to reach the Coopersdale, or Laurel Avenue Bridge.
20.5' - Flood waters begin to reach the Fourth Avenue Bridge and the Bethlehem Steel footbridge.
19' - Approximate level of the FEMA 2 0X0P+0nnual Chance Flood level (50-year flood).
10.5' - Approximate level of the FEMA 10 0X0P+0nnual Chance Flood level (100-year flood).
DateStage (ft)
May 31, 1889 41.6
Mar 18, 1936 39
Jul 20, 1977 34
Mar 29, 1924 30.2
Jan 19, 1996 25.299999237061

Data provided by the National Weather Service.