Flood Potential Outlook
Issued by NWS Louisville, KY

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Hydrologic Outlook
National Weather Service Louisville KY
955 AM EST Thu Mar 2 2017

...Spring Flood and Water Resources Outlook Number 2..

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 near normal for
this time of year. Minor flooding is expected due to rainfall.

This outlook is valid from March 3 through 16 2016.

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:  03/07/2017 - 06/05/2017

                                       :    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 :  13   17    8    9   <5   <5
:Blue River
Fredericksburg      20.0   24.0   27.0 :  24   27   13   14   <5   <5
:Drakes Creek
Alvaton             24.0   35.0   42.0 :  30   33   <5   <5   <5   <5
:Elkhorn Creek
Peaks Mill          10.0   12.0   14.0 :  77   60   <5   57   <5   54
:Green River
Brownsville         18.0   32.0   41.0 :  27   36   <5   <5   <5   <5
Munfordville        28.0   50.0   57.0 :  21   26   <5   <5   <5   <5
Rochester           17.0   25.0   30.0 :  51   62   12   12   <5   <5
Woodbury            33.0   45.0   48.0 :  53   59   12   13   <5   <5
:Kentucky
Camp Nelson Lock    30.0   36.0   40.0 :  <5   56   <5   52   <5   <5
:Kentucky River
Frankfort Lock      31.0   35.0   40.0 :  11   10    5    5   <5   <5
Ford Lock           26.0   35.0   40.0 :  19   21   <5   <5   <5   <5
High Bridge Lock    30.0   36.0   39.0 :  15   15    5    5   <5   <5
Lockport Lock       33.0   43.0   49.0 :  28   31    9    8   <5   <5
:Licking River
Blue Licks Spring   25.0   42.0   45.0 :  37   53   <5   <5   <5   <5
:Muscatatuck River
Deputy              25.0   28.0   32.0 :  20   20    9   <5   <5   <5
:Ohio River
Clifty Creek       451.0  457.0  470.0 :   9   14   <5   <5   <5   <5
Cannelton Lock      42.0   46.0   50.0 :  27   39    7    9   <5   <5
McAlpine Lower      55.0   65.0   73.0 :  18   28   <5   <5   <5   <5
McAlpine Upper      23.0   30.0   38.0 :  23   35    6    7   <5   <5
Tell City           38.0   44.0   50.0 :  49   62    9   15   <5   <5
:Rolling Fork River
Boston              35.0   42.0   45.0 :  42   47   19   21   11   12
:Rough River
Dundee              25.0   28.0   30.0 :  34   37   18   23    6    6
:Salt River
Shepherdsville      32.0   35.0   40.0 :   7    9   <5    7   <5   <5
:South Fork Licking River
Cynthiana           20.0   22.0   23.0 :  20   20   15   15   13   13

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: 03/07/2017 - 06/05/2017
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Barren River
Bowling Green         9.6   10.8   13.6   18.6   23.6   29.0   37.8
:Blue River
Fredericksburg        4.9    6.3    8.5   10.8   19.7   25.0   25.9
:Drakes Creek
Alvaton               9.4   10.2   13.6   18.6   25.5   28.8   33.5
:Elkhorn Creek
Peaks Mill            5.2    6.0    6.9    8.2   11.4   16.0   16.5
:Green River
Brownsville          11.7   11.9   13.5   15.0   18.3   25.3   26.2
Munfordville          8.3   10.3   12.9   17.4   24.9   36.4   44.8
Rochester            12.5   12.9   14.5   17.1   21.3   25.5   27.8
Woodbury             17.7   19.6   26.3   33.8   41.0   45.6   46.7
:Kentucky
Camp Nelson Lock     18.4   19.6   21.0   24.2   27.7   35.8   39.8
:Kentucky River
Frankfort Lock       12.0   12.6   14.1   19.0   23.9   31.3   35.4
Ford Lock            15.8   16.7   17.9   20.1   24.4   28.3   30.4
High Bridge Lock     16.4   17.5   18.9   21.6   25.1   32.7   36.2
Lockport Lock        15.9   17.5   19.3   26.0   33.8   42.1   48.5
:Licking River
Blue Licks Spring    14.6   15.0   17.6   22.0   27.8   34.2   37.1
:Muscatatuck River
Deputy                9.5   10.6   14.8   20.8   23.8   27.8   28.6
:Ohio River
Clifty Creek        431.7  434.5  437.1  441.7  446.6  450.0  454.1
Cannelton Lock       28.3   32.0   34.2   38.8   42.3   43.7   48.2
McAlpine Lower       34.6   38.7   42.6   47.8   53.3   56.8   62.1
McAlpine Upper       13.3   15.5   16.8   18.5   22.6   25.7   30.7
Tell City            27.2   30.9   33.1   37.8   41.8   43.1   46.6
:Rolling Fork River
Boston               16.0   19.1   24.9   32.7   40.0   45.4   47.2
:Rough River
Dundee               14.6   16.1   19.2   22.0   26.8   29.5   30.1
:Salt River
Shepherdsville        5.2    5.9    7.2   10.6   16.3   28.9   33.7
:South Fork Licking River
Cynthiana             8.3    8.8   10.0   13.0   18.0   24.1   24.7

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: 03/07/2017 - 06/05/2017
Location              95%    90%    75%    50%    25%    10%     5%
--------            ------ ------ ------ ------ ------ ------ ------
:Barren River
Bowling Green         5.7    4.5    4.1    3.9    3.8    3.7    3.7
:Blue River
Fredericksburg        2.8    2.8    2.6    2.5    2.4    2.3    2.2
:Drakes Creek
Alvaton               4.6    4.5    4.4    4.3    4.3    4.2    4.2
:Elkhorn Creek
Peaks Mill            2.3    2.3    2.1    2.0    2.0    1.9    1.9
:Green River
Brownsville           9.4    9.3    9.2    9.1    8.8    8.6    8.5
Munfordville          4.2    3.9    3.7    3.5    3.2    3.1    2.9
Rochester             8.7    8.5    8.1    7.6    7.1    6.8    6.7
Woodbury              9.0    8.8    8.2    7.5    6.8    6.5    6.3
:Kentucky
Camp Nelson Lock     12.5   12.3   12.0   11.6   11.5   11.3   11.3
:Kentucky River
Frankfort Lock        8.4    8.2    8.0    7.9    7.8    7.7    7.7
Ford Lock            10.9   10.6   10.3   10.0    9.8    9.7    9.7
High Bridge Lock     10.8   10.5   10.5   10.5   10.5   10.5   10.5
Lockport Lock        10.3   10.1    9.9    9.7    9.5    9.5    9.4
:Licking River
Blue Licks Spring     8.6    8.5    8.4    8.3    8.3    8.2    8.2
:Muscatatuck River
Deputy                3.8    3.7    3.6    3.6    3.4    3.4    3.3
:Ohio River
Clifty Creek        422.5  422.3  421.9  421.6  421.3  421.2  421.1
Cannelton Lock       14.8   14.4   13.5   12.5   12.0   11.8   11.6
McAlpine Lower       16.7   16.1   14.6   13.3   12.6   12.2   11.9
McAlpine Upper       12.5   12.5   12.5   12.5   12.5   12.5   12.5
Tell City            15.6   15.3   14.7   13.9   13.5   13.2   13.0
:Rolling Fork River
Boston                5.7    5.0    4.6    4.3    3.9    3.7    3.6
:Rough River
Dundee                8.6    7.7    6.2    5.8    5.8    5.7    5.7
:Salt River
Shepherdsville        2.0    1.8    1.8    1.6    1.5    1.5    1.5
:South Fork Licking River
Cynthiana             4.7    4.7    4.6    4.5    4.5    4.3    4.1

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.

This outlook calls for a near normal chance of flooding due to
current conditions of ground moisture, streamflows, and expected
precipitation over the next two weeks. Minor flooding means minimal
or no property damage, but possibly some public threat or
inconvenience.

Ice jams and snow melt are usually not a factor for flooding in this
part of the country.

Over the last 30 days, precipitation was within an inch of normal
across the entire area. Most of the rain fell in the last two days.
Soil moisture was near normal. Reservoir levels were also near
normal except for Taylorsville Lake which was about 9 feet above
normal due to recent heavy rain. Streamflows were also above normal
due to recent heavy rain.

One to two inches of rain are forecast to fall early next week.

The 8 to 14 day outlook, valid March 9 through 15 calls for
temperatures and precipitation to be above normal. At this time of
the year, normal temperatures are in the mid 40s and precipitation
is around an sixth tenths of an inch.

The outlook for March is near normal precipitation. Normal
precipitation is between four and five inches. The seasonal outlook
for March through May calls for near normal precipitation as well.

This will be the final spring and water resources outlook this
year.

Additional supportive data and explanations are available for
precipitation and temperature forecasts and current soil moisture
data 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 lrl-
apps.lrl.usace.army.mil/wc/reports/lkreport.html.

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

$$

Callahan



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