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).