RAINFALL IN HERTFORDSHIRE IN 1902 . 
233 
{Colne) Bulbourne, 20-02 ins.; Gade, 21*46 ins.; Yer, 20-89 ins.; 
Upper Colne, 21*34 ins. ; Lower Colne, 22*65 ins. ; {Lea) Mimram, 
20-06 ins.; Beane, 19-94 ins.; Rib, 1919 ins.; Ash, 20*51 ins.; 
Stort, 20-71 ins.; Upper Lea, 18-03 ins. ; Lower Lea, 20*12 ins. 
The rainfall was more uniform over the county than usual. The 
Ivel river-district had the average fall for the whole county, the 
Colne had an inch more than the average, and the districts of the 
Thame, Lea, and Cam had respectively half an inch, three-quarters 
of an inch, and an inch and a half less than the county average. 
The rainfall reached at least an inch in 24 hours on five occasions 
during the year, once in each of the months of May, June, July, 
August, and September; and there are 21 records of such falls in 
the aggregate at all stations. Ten of these are in the north of the 
county, in the Ouse district; ten in the east, in the Lea district; 
and only one is in the west, in the Colne district. 
The total yearly fall ranged from 17*28 inches at the Red House, 
Ware, to 23*04 inches at Moor Park, Rickmansworth; and the total 
monthly fall from 0*35 inch at Odsey, in January, to 4*76 inches at 
Progmore, Watford, in August. The greatest fall in any one day 
was 2-21 inches at High Down, Hitchin, on 11th September, and 
that is the only fall of at least two inches in the year. 
Distribution of the Rainfall in each Month. —The nomenclature 
used in the following accounts of the chief falls of rain in each 
month is the same as in my previous reports, falls of at least 
\ inch being styled considerable, f inch very considerable, 1 inch 
great, 1 £ inch very great , 1£ inch heavy , If inch very heavy, and 
2 inches excessive. Only the forty returns of the daily rainfall 
are thus analysed, except that falls of at least an inch which were 
the heaviest in the month are given for all stations. The wettest 
days in each month are given for all the forty-eight stations. 
January. —A very dry month, with rain or snow on a small 
number of days, the latter falling on three or four days during 
the last week only, and to a very small amount. There was no 
considerable fall either as rain or snow. The 1st was the wettest 
day at 16 stations, the 4th at 17, the 26th at 14, and the 4th and 
26th were the wettest at one station. 
February.— Rather dry, with rain or snow on rather less than 
the average number of days. During the first half of the month 
snow only fell, on three or four days; during the second half, 
rain only, which was consecutive for the seven days 22nd to 28th, 
and almost inappreciable before that period. There was no con¬ 
siderable fall of either rain or snow. The 22nd was the wettest 
day at 3 stations, the 24th at 42, and the 26th at 3. 
March. —A month of nearly average rainfall on about the usual 
number of days, with a little snow and hail on two or three days 
during the last week. A dry period, 10th to 18th, was broken 
on the 14th by a fall of rain which was considerable at 27 stations 
and very considerable at 2. The 13th was the wettest day at 
3 stations, the 14th at 44, and the 24th at one station. 
April. —Yery dry, with rain on rather less than the average 
