Point Flow Analysis Software for the Lower South Platte River

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generally documented by River Commissioners. • river mile - A distance of one mile of which is summed by following the curvature of the defined river channel. In the case of this Lower South Platte River Point Flow analysis, the Kersey gauge is defined as being 0.0 river miles. All downstream structures are then defined by positive river mile with respect to the Kersey gauge. The last structure aetined by the Lower South Platte River is the Julesburg gauge near the Colorado/Nebraska state line and which resides 153.7 river miles downstream and to the Northeast of Kersey. • river reach - A river reach is defined as a section of river in which both the flow of water in the river channel entering the section and the flow of water in the river channel exiting the channel are known. Multiple structures may be situated between the up river and down river boundary of a river reach. The boundaries of river reaches are often defined by two gauging stations. • river subreach - A river subreach is a component of a river reach and is the section of river channel between any two consecutive structures (nodes). There are generally numerous river subreaches within a given river reach, however, there may be instances in which a river subreach defines the same segment of river as a river reach. The situation of a river subreach encompassing a river reach arises when no structures (nodes) are defined between two river gauging stations. • stream - Surface water flowing into the main stem of the river. Usually a small tributary to the river or inflow from a drainage ditch. These flows are not to be confused with waters flowing within the main channel of the river. • structure - A location along the river which identifies either a point of diversion from the river (i.e., canal, ditch), a point of river channel flow measurement (i.e. river gauge), or a point of surface inflow to the river (i.e., stream inflow). In the following discussions outlining the point flow calculations, the term 'node' is used interchangeably with 'structure' to identify locations along the river._ Referring to such structures as nodes eliminates the confusion that may result from labeling a point on the river a structure even though, in some cases, a physical structure does not exist. This is generally true in the instance of an inflowing tributary stream. There may be instances in which two or more structures exist at identical locations along the river (identical river mile). Moreover, the structures may be of differing type (i.e., canal and inflowing tributary). When multiple structures exist at one location their respective flows are combined ( inflowing streams: positive; diverting canals: negative) resulting in either a composite diversion or inflow. The name of the node can then either symbolize the most major structure entailed or an amalgamation of all entailed structures. • table - The term table is interchangeable for the term database. The use of the term table, as opposed to database, stems from the terminology used within Microsoft's FoxPro documentation (FoxPro for Windows is the software utilized to manipulate tables and perform 4 ptflguid.wpd