Okutama ReservoirASI-24

Title : Monthly mean atmospheric temperature (1982-1984) and precipitation (1941-1984); Monthly mean water temperature by depth (1982-1984)

Classification of data : D2 Climatic

File Name : asi-24-d2.txt

            D2 CLIMATIC (Q)

<< Climatic data at the control office site >>


                      Jan     Feb     Mar     Apr     May     Jun     Jul     Aug     Sep     Oct     Nov     Dec     Ann.
-------------------------------------------------------------------------------------------------------------------------------
Mean temp. [deg C]    1.4     1.5     5.1     13.1    18.5    19.9    22.8    25.7    21.2    14.8    10.8    5.4     13.4
Precipition [mm]       39      53      71     104     122     181     222     281     225     185      76      39    1,597
-------------------------------------------------------------------------------------------------------------------------------
*1 1982-1984. *2 1941-1984.


<< Solar Radiation >>

YEAR: 1974-1980

11.4MJ [m-2 day-1]


<< Water temperature [deg C] >>

SITE: Near the dam
YEAR: 1982-1984


Month      Jan     Feb     Mar     Apr     May     Jun     Jul     Aug     Sep     Oct     Nov     Dec
---------------------------------------------------------------------------------------------------------
Depth [m]
   0      8.8     7.2     7.0     10.2    16.9    20.4    22.6    24.9    22.2    17.8    14.7    12.0
  M*1     8.5     6.9     6.2     6.2     6.4     6.5     6.6     8.2     11.0    12.1    12.2    11.4
  B*2     7.9     6.8     6.2     6.1     6.3     6.5     6.5     7.7     7.6     7.6     7.7     7.8
---------------------------------------------------------------------------------------------------------
*1 Middle. *2 Bottom.


<< Notes on water mixing and thermocline formation >>

Thermocline is formed at about 73 m depth.