220 FORESTS, WOODS, AND TREES 
Gloucester obtains part of its water supply from two 
catchment areas : 
1. A gathering ground of 260 acres on Robinswood 
Hill, an outlier of the Cotswolds, 2 miles south-east of 
Gloucester, between 155 and 651 feet elevation, all hill 
pasture except 12 acres of plantations. There are 4 farms 
on the area, the drainage of which is taken outside the 
watershed of the reservoirs; and the water is filtered 
before reaching the city. The Corporation own about 
7 acres. 
2. Witcombe gathering ground of 1500 acres, between 
293 and 900 feet elevation, with three impounding 
reservoirs at the base of an escarpment on the northern 
face of the Cotswold Hills, about 6 miles east of Gloucester. 
The water is derived from springs thrown out at the 
600-feet contour line, just above the Lias clay. The total 
area comprises 12 acres of arable land, 988 acres of hill 
pasture, and 500 acres of plantations. There are 5 farms 
and, Witcombe Park on the gathering ground, the sewage of 
which drains into cesspools. The water is filtered. The 
Corporation own only 42 acres. ‘Trees do well, oak, 
elm, sycamore, and lime thriving on the Lias formation, and 
beech, pine, and larch on the Oolite. The annual rainfall, 
varying from 20°37 to 42°37 inches, averages about 30 
inches. 
Newport, Monmouthshire, obtains its water supply from 
two catchment areas, aggregating 3630 acres: 
1. An intake at Henllys from the Pant yr eos and 
Henllys Brooks, with a catchment area of 2026 acres, 
between 123 and 1300 feet elevation, of which the Corpora- 
tion own about 664 acres. There are approximately 150 
persons dwelling on the gathering ground, which consists 
of 1467 acres of mountain pasture, with some arable land, 
and 559 acres of plantations. There are two storage 
reservoirs at Rogerstone, and one at Pant yr eos. 
2. Intakes at Newchurch, Wentwood, and Llanvaches, 
from Castroggy Nant y prydd and Llanvaches Brooks, with 
