Public Information Statement
Issued by NWS St. Louis, MO

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1048 AM CST THU JAN 14 2016

...Meramec River at Pacific establishes new flood of record...

The crest measured at the Meramec River gage at Pacific of 33.42
feet on December 30, 2015 represents the highest stage recorded at
this site. The previous record established on December 6, 1982 was
the source of uncertain conjecture, primarily because there was no
continuous automated recording gage in place at the time.

The National Weather Service had previously accepted a value of
33.64 feet as the 1982 crest, which was supposedly based on a high
water mark measurement at the current gaging location. But
additional investigation of high water mark survey documentation
by the Corps of Engineers revealed a more likely 1982 crest value
of 32.71 feet. This leaves the late December 2015 crest of 33.42
feet as the official flood of record.

This also brings the total number of forecast gaging locations
experiencing floods of record with the December 2015 flood to
five. The forecast gages establishing new floods of record
now include:

Bourbeuse River at Union
 New Record - 34.31 feet at 10:30 a.m. on December 29, 2015
 Old Record - 33.80 feet on December 5, 1982

Meramec River at Pacific
 New Record - 33.42 feet at 10:15 a.m. on December 30, 2015
 Old Record - 32.71 feet on December 5, 1982

Meramec River near Eureka
 New Record - 46.06 feet at 5:00 p.m. on December 30, 2015
 Old Record - 42.89 feet on December 6, 1982

Meramec River at Valley Park
 New Record - 44.11 feet at 3:45 a.m. on December 31, 2015
 Old Record - 39.73 feet on December 6, 1982

Meramec River at Arnold
 New Record - 47.20 feet at 7:45 a.m. on December 31, 2015
 Old Record - 45.30 feet on August 1, 1993

Any additional questions about this matter can be directed to:

Mark Fuchs
Service Hydrologist
National Weather Service - St. Louis
(636) 447-1876 extension 493
Email: mark.fuchs@noaa.gov

$$

Fuchs


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