There is also provided a stake or spike 47 which is secured
to the tube and driven into the ditch bank B to support the
entire assembly in an upright manner on the ditch bank. The
preferred arrangement is to detachably connect the spike 47
to the tube so that the stake may be ?rst driven into the bank
followed by the securing of the tube and control device
assembly thereon. Advantageously, this allows the tube to be
initially primed by placing it in the ditch and ?lling it with
water and then securing it to the stake 47. The removable
mounting of the stake may take various forms and as shown is
provided by a clevis portion 48 depending from the clamp
portion 44 like that of the pivot 34 with an aperture in the
stake through which a removable pin 49 may extend.