Flood Potential Outlook
Issued by NWS Louisville, KY

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PROBABILISTIC HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE Louisville KY
1230 PM EDT Thu Mar 13 2025

...Spring Flood and Water Resources Outlook Number 3...

This outlook covers south central Indiana, central Kentucky, and the
Ohio River from Madison, Indiana to Tell City, Indiana.

The flood risk in the middle of the Ohio Valley is normal to slightly
above normal. Minor to moderate flooding is expected due to rainfall
and thunderstorms with isolated major flooding possible especially
south of the Ohio River.

This outlook is valid through May 2025.

In Table 1 below...the current (CS) and historical (HS) or normal
probabilities of exceeding minor...moderate...and major flood stages
are listed for the valid time period.

CS values indicate the probability of reaching a flood category
based on current conditions.

HS values indicate the probability of reaching a flood category
based on historical or normal conditions.

When the value of CS is more than HS...the probability of
exceeding that level is higher than normal. When the value of CS is
less than HS...the probability of exceeding that level is lower
than normal.


...Table 1--Probabilities for minor...moderate and major flooding...
                    Valid Period:  03/18/2025 - 06/16/2025

                                       :    Current and Historical
                                       :     Chances of Exceeding
                                       :       Flood Categories
                                       :      as a Percentage (%)
                      Categorical      :
                   Flood Stages (FT)   :   Minor    Moderate   Major
Location           Minor   Mod   Major :  CS   HS   CS   HS   CS   HS
--------           -----  -----  ----- : ---  ---  ---  ---  ---  ---
:Barren River
Bowling Green       28.0   32.0   45.0 :  14   11    8    8   <5   <5
:Blue River
Fredericksburg      20.0   24.0   27.0 :  27   25   12   13   <5   <5
:Cumberland River
Burkesville         46.0   55.0   64.0 :  20   22   <5   <5   <5   <5
:Drakes Creek
Alvaton             24.0   35.0   42.0 :  34   29   <5   <5   <5   <5
:Elkhorn Creek
Peaks Mill          10.0   12.0   14.0 :  39   33   26   21   15   14
:Green River
Munfordville        28.0   50.0   57.0 :  20   20   <5   <5   <5   <5
Mammoth Cave        32.0   57.0   62.0 :  46   34   <5   <5   <5   <5
Rochester           37.0   45.0   50.0 :  65   <5    8   <5   <5   <5
Woodbury            26.0   38.0   41.0 :  74   58   10   13    7   <5
:Kentucky River
Camp Nelson Lock    30.0   36.0   40.0 :  21   22    8   16    6   11
Frankfort Lock      31.0   35.0   40.0 :  11   11    7    5   <5   <5
Ford Lock           26.0   35.0   40.0 :  21   16   <5   <5   <5   <5
High Bridge Lock    30.0   36.0   39.0 :  15   16    7    7    5   <5
Lockport Lock       33.0   43.0   49.0 :  24   22    8    7   <5   <5
:Licking River
Blue Licks Spring   25.0   42.0   45.0 :  44   36   <5   <5   <5   <5
:Muscatatuck River
Deputy              25.0   28.0   32.0 :  32   17   12   <5   <5   <5
:Ohio River
Clifty Creek       451.0  457.0  470.0 :   6   <5   <5   <5   <5   <5
Cannelton Lock an   42.0   46.0   50.0 :  29   27   <5   <5   <5   <5
McAlpine Lower      55.0   65.0   73.0 :  19   19   <5   <5   <5   <5
McAlpine Upper      23.0   30.0   38.0 :  25   24   <5   <5   <5   <5
Tell City           38.0   44.0   50.0 :  55   51   <5    8   <5   <5
:Rolling Fork River
Boston              35.0   42.0   45.0 :  30   35   13   10    7    7
:Rough River
Dundee              25.0   28.0   30.0 :  42   29   20   14   <5    5
:Salt River
Shepherdsville      32.0   35.0   40.0 :   7    8   <5    6   <5   <5
:South Fork Licking River
Cynthiana           20.0   22.0   23.0 :  15   17    8   11    6    9

Legend
CS = Conditional Simulation (Current Outlook)
HS = Historical Simulation
FT = Feet

In Table 2 below...the 95 through 5 percent columns indicate the
probability of exceeding the listed stage levels (FT) for the valid
time period.

...Table 2--Exceedance Probabilities...

                               Chance of Exceeding Stages
                                  at Specific Locations
                          Valid Period: 03/18/2025 - 06/16/2025
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Barren River
Bowling Green        13.7   14.8   16.8   21.8   24.7   29.1   36.1
:Blue River
Fredericksburg        7.1    7.9    9.0   11.0   20.8   24.5   25.6
:Cumberland River
Burkesville          35.4   36.2   40.0   43.9   45.4   47.2   48.8
:Drakes Creek
Alvaton              10.7   11.6   13.7   20.9   25.8   29.0   33.3
:Elkhorn Creek
Peaks Mill            5.7    6.3    7.0    8.3   12.2   15.0   17.0
:Green River
Munfordville         14.6   15.2   16.9   20.6   25.3   34.1   40.6
Mammoth Cave         24.4   25.2   27.3   31.0   37.0   44.5   46.7
Rochester            34.9   35.3   36.3   38.2   41.0   43.9   46.8
Woodbury             21.8   22.5   25.8   28.9   33.6   38.0   43.2
:Kentucky River
Camp Nelson Lock     20.5   22.0   23.6   27.0   29.1   32.9   41.6
Frankfort Lock       12.4   13.0   14.9   20.6   24.2   31.3   37.7
Ford Lock            17.6   18.4   20.0   23.0   24.9   29.5   34.4
High Bridge Lock     17.0   17.8   19.3   22.8   25.8   32.0   39.4
Lockport Lock        16.5   17.8   20.4   27.0   32.4   40.8   46.1
:Licking River
Blue Licks Spring    16.1   17.7   20.0   23.5   29.4   34.3   38.5
:Muscatatuck River
Deputy               12.1   13.1   18.6   22.6   25.9   28.2   30.1
:Ohio River
Clifty Creek        429.0  431.3  437.2  442.6  447.2  449.7  451.4
Cannelton Lock an    24.5   28.2   34.3   39.9   42.4   44.0   44.5
McAlpine Lower       30.5   34.7   43.0   49.2   53.8   56.9   59.0
McAlpine Upper       12.6   13.5   16.9   19.4   23.0   25.9   27.9
Tell City            23.5   27.1   33.2   39.1   42.0   43.4   43.8
:Rolling Fork River
Boston               15.7   19.3   24.7   30.8   36.1   43.3   45.8
:Rough River
Dundee               18.0   19.7   21.5   23.7   27.6   28.8   29.7
:Salt River
Shepherdsville        6.1    6.6    8.6   13.2   21.7   29.6   33.8
:South Fork Licking River
Cynthiana             8.0    9.1   10.4   13.3   17.6   21.2   23.2

In Table 3 below...the 95 through 5 percent columns indicate the
probability of falling below the listed stage levels (FT) for the
valid time period.

...Table 3--Nonexceedance Probabilities...

                            Chance of Falling Below Stages
                                 at Specific Locations
                          Valid Period: 03/18/2025 - 06/16/2025
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Barren River
Bowling Green         9.1    8.5    7.2    4.4    3.9    3.7    3.6
:Blue River
Fredericksburg        3.0    2.9    2.8    2.7    2.5    2.5    2.4
:Cumberland River
Burkesville          32.2   32.0   29.8   28.3   27.8   27.3   26.3
:Drakes Creek
Alvaton               4.7    4.6    4.4    4.3    4.2    4.1    4.1
:Elkhorn Creek
Peaks Mill            2.5    2.4    2.3    2.2    2.1    2.1    2.1
:Green River
Munfordville          5.0    4.2    3.8    3.5    3.3    3.1    3.0
Mammoth Cave         13.1   11.5   10.8   10.4   10.0    9.7    9.6
Rochester            31.0   30.6   29.6   28.4   27.5   27.0   26.8
Woodbury              9.1    8.5    6.3    3.7    2.9    2.6    2.5
:Kentucky River
Camp Nelson Lock     12.9   12.7   12.3   12.0   11.7   11.6   11.5
Frankfort Lock        7.8    7.7    7.4    7.1    6.9    6.8    6.8
Ford Lock            11.1   10.9   10.4   10.2    9.9    9.8    9.7
High Bridge Lock     10.6   10.3    9.9    9.4    9.1    8.9    8.9
Lockport Lock         9.8    9.6    9.2    8.7    8.5    8.4    8.3
:Licking River
Blue Licks Spring    11.0   10.8    7.2    6.0    4.9    4.7    4.6
:Muscatatuck River
Deputy                3.6    3.4    3.3    3.2    3.0    2.9    2.8
:Ohio River
Clifty Creek        422.1  421.9  421.4  421.1  420.8  420.5  420.4
Cannelton Lock an    14.3   13.5   12.3   11.6   11.0   10.8   10.7
McAlpine Lower       15.6   14.5   12.8   11.7   10.9   10.5   10.4
McAlpine Upper       12.5   12.5   12.5   12.5   12.5   12.5   12.5
Tell City            15.3   14.7   13.7   13.0   12.3   12.0   11.9
:Rolling Fork River
Boston                4.7    4.4    3.8    3.4    3.1    2.8    2.7
:Rough River
Dundee               10.6    9.9    8.4    7.4    6.9    6.9    6.9
:Salt River
Shepherdsville        2.0    2.0    1.7    1.6    1.5    1.5    1.5
:South Fork Licking River
Cynthiana             5.1    5.0    5.0    5.0    4.9    4.9    4.9

These long-range probabilistic outlooks contain forecast values that
are calculated using multiple season scenarios from 30 or more years
of climatological data...including current conditions of the
river...soil moisture...snow cover...and 30 to 90 day long-range
outlooks of temperature and precipitation. By providing a range of
probabilities...the level of risk associated with long-range planning
decisions can be determined. These probabilistic forecasts are part
of the National Weather Service`s advanced hydrologic prediction
service.

Since mid December, precipitation has been well above normal and
temperatures have been below normal across the region.  As of mid
March, soil moisture was above normal and streamflows were near normal
or above normal over southern Indiana and central Kentucky.  Reservoir
levels were near or above normal.

Over the next week, the weather pattern will be active with a strong
storm system expected to bring 1-3 inches of rain with locally higher
amounts this Friday-Saturday.  This looks to result in some minor river
flooding with isolated moderate river flooding possible.  Another storm
system will bring additional rainfall of less than 1 inch Wednesday-
Thursday of next week.

The 8-14 day outlook which goes out through March 26 calls for above
normal temperatures and precipitation.  At this time of year, normal
temperatures are in the mid to upper 40s and normal precipitation is
around a quarter to one inch.

The outlook for late March to early April calls for good chances of
above normal temperatures and precipitation. Normal temperatures for
late March are in the low 50s with normal precipitation between a
quarter to one inch.

The seasonal outlook for March through May indicates good
chances for above normal temperatures and precipitation.

Additional supportive data and explanations are available for
precipitation and temperature outlooks as well as soil moisture at
www.cpc.noaa.gov.

Current snowpack data are available at www.nohrsc.noaa.gov/nsa.

Current streamflow data are available at water.usgs.gov/waterwatch.

Current reservoir levels for this area are available at www.lrl-
wc.usace.army.mil/reports/lkreport.html.

Visit our web site weather.gov/lmk for more weather and water
information.

This is the final hydro outlook for Spring 2025.

$$

AMS