Item No
Requirement
Compilation
10
Means used to remove excess water (drain ditches,
Drain ditches and pumps.
pumps, and so on).
11
Indicate whether elevations are based on mean sea
Meters above the North sea (mNN).
level or on some other reference.
12
Give the following data for the drained or reclaimed
land
a. Total area.
a. 100 sq km.
b. Width.
b. Varies between 2 and 3 km.
c. Length.
c. 36 km.
d. Elevation, highest point drained.
d. 4.0 mNN.
e. Elevation, lowest point drained.
e. 0.0 mNN.
f. Kinds of crops grown.
f. Gardening.
g. Kind and depth of soil.
g. Geest.
13
Give the following data for the main drain ditches:
a. Length.
a. 15 Km (approximately).
b. Width.
b. 1.0m at bottom with 1:1.5 side slopes.
c. Depth.
c. 1.0m.
d. Discharge capacity.
d. 7.2 cu m/sec (combined).
14
Elevation of mouth of lowest drain ditch.
-3.54 mNN.
15
Give the following data for each type of pumping
plant connected with project:
a. Number and types of pumps. (Indicate whether
a. 16 pump units. (Electric)
pumps are powered by oil, coal, electricity, and
so on.)
b. Location. (Give distance and direction from a
b. The main pumping plant at Ochsenwarder
definite reference point.)
has 4 main units and 3 supplemental
units. Three other pumping plants are
located SE at intervals of approximately
3 Km on the Gose Elbe, and each has 3
units.
c.
Material used in construction of pumphouse,
c. Concrete and masonry.
(wood, concrete, masonry, and so on).
d. Design discharge capacity of plant and corre-
d. 7.60 cu m/sec against 2.60 m head. Three
sponding head or lift.
supplemental pump units at same loca-
tion of 0.95 cu m/sec against 2.60 m head.
e. Number, rating, and voltage of electric pump
e. NI.
motors.
16
Total discharge capacity of all pumping plants.
7.6 cu m/sec.
17
Period of record of volume of water removed from the
1920-1954 (approximately).
area.
18
Give the average monthly volume of water removed
nval.
from the land for period shown in item 17. (This
is not always applicable.)
19
Any information pertinent to the major subject which
There are 3 additional pump stations which
should not logically be included with any of the
serve solely for irrigation.
items previously listed.
20
Source or sources of data. If different for various
"Die Bautechnik," Heft 53, 7 December 1926.
items, list item numbers in groups corresponding to
the source.
21
Reliability of the source or source data.
Usually reliable.
22
Accuracy of data.
Probably true.
23
Agency or unit preparing the compilation.
Military Hydrology Branch, Washington Dis-
trict CE.
24
Inclose pictures, maps and drawings depicting the lo-
cation and other features of major items.
burg-Vierlande area (fig. 29).
b. Ditch systems of pumpworks VI and VII and
typical ditch cross sections (fig. 30).
25
Date compilation was prepared.
1 June 1954.
AGO 3898A
45
