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  2. Hydraulic jumps in rectangular channels - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_Jumps_in...

    1. y 2 /y 1 > 1: depth increases over the jump so that y 2 > y 1 2. Fr 2 < 1: downstream flow must be subcritical 3. Fr 1 > 1: upstream flow must be supercritical. Table 2 shows the calculated values used to develop Figure 8. The values associated with a y 1 = 1.5 ft are not valid for use since they

  3. Wetted perimeter - Wikipedia

    en.wikipedia.org/wiki/Wetted_perimeter

    In a practical experiment, one is able to measure the wetted perimeter with a tape measure weighted down to the river bed to get a more accurate measurement. When a channel is much wider than it is deep, the wetted perimeter approximates the channel width. [1]

  4. River regime - Wikipedia

    en.wikipedia.org/wiki/River_regime

    The river regime generally refers to the mathematical relationship between the river discharge and its width, depth and slope. Thus, "river regime" describes a series of characteristic power-law relationships between discharge and width, depth and slope [ 1 ]

  5. Training (civil) - Wikipedia

    en.wikipedia.org/wiki/Training_(civil)

    Training or entrance training refers to coastal structures built to constrain a river discharging across a littoral coast so that it discharges only where desired. Untrained entrances on sandy coasts tend to move widely and violently to discharge into the ocean, often upsetting those enjoying land nearby.

  6. Stream competency - Wikipedia

    en.wikipedia.org/wiki/Stream_competency

    Stream power is the rate of potential energy loss per unit of channel length. [7] This potential energy is lost moving particles along the stream bed. = where is the stream power, is the density of water, is the gravitational acceleration, is the channel slope, and is the discharge of the stream.

  7. Armor (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Armor_(hydrology)

    Armour of basalt blocks. In hydrology and geography, armor is the association of surface pebbles, rocks or boulders with stream beds or beaches.Most commonly hydrological armor occurs naturally; however, a man-made form is usually called riprap, when shorelines or stream banks are fortified for erosion protection with large boulders or sizable manufactured concrete objects.

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  9. Northern Warfare Training Center - Wikipedia

    en.wikipedia.org/wiki/Northern_Warfare_Training...

    Training for extended operations in cold and mountainous areas was initiated in November 1941 with the activation of the 87th Mountain Infantry and the Mountain and Winter Warfare Board at Fort Lewis, Washington. Training and testing were conducted by these organizations at Mount Rainier, Washington throughout the winter of 1941 - 1942.