|
<br />00'''- ..,r!
<br />lu,:>"
<br />
<br />3. Description of CRSS
<br />
<br />3.1 General Description
<br />
<br />The CRSS is a set of computer programs and data files that are used to
<br />model the quantity and quality of flows in the Colorado River and its
<br />tributaries. The main program, the CRSM, is essentially a water
<br />accounting program. Water is brought into the basin at several points,
<br />routed through the system, and deliveries are made. In the process,
<br />however, the model takes into account forecasting procedures, reservoi r
<br />operations and evaporation, sedimentation, operating strategies of the
<br />system, and "Laws of the River."
<br />
<br />3.2 Basic Characteristics
<br />
<br />Brief descriptions of some of the basic characteristics of the CRSS are
<br />presented below:
<br />
<br />_ The model simulates riverflows, water deliveries, salinity con-
<br />centrations, hydroelectric power production, and reservoir opera-
<br />tions on a monthly time frame.
<br />
<br />The basin is currently divided into 25 reaches. Each reach can
<br />contain 10 inflow points and 10 diversion points. An inflow point
<br />can either be an inflow, return flow, reservoir, or salinity
<br />checkpoint.
<br />
<br />Up to 10 demands can be grouped into each diversion point. Data
<br />available from the demand data base include a schedule of with-
<br />drawals and depletions, monthly distributions, return flow lag
<br />times, allowable shortages, salt pickup, and water use
<br />information.
<br />
<br />_ The hydrology data base contains monthly values of flow and salt
<br />load beginning with water year 1906. The data base currently con-
<br />tains 29 inflow stations.
<br />
<br />The following parameters are modeled: flow, salinity, reservoir
<br />operation (water surface elevation, surface area, surface storage,
<br />bank storage, evaporation, and sedimentation), hydroelectric
<br />power production (energy and capacity), diversions, consumptive
<br />use, return flows, and shortages.
<br />
<br />The model simulates irrigation requirements, forecasting proce-
<br />dures, a surpl us strategy, a shortage strategy, and the "Laws of
<br />the River."
<br />
<br />The following rivers are currently modeled: Colorado, Gunnison,
<br />Dolores, Green, Yampa, White, Duchesne, San Rafael, and the
<br />San Juan.
<br />
<br />The following reservoirs are currently modeled: Taylor Park, Blue
<br />Mesa, Morrow Point, Crystal, Fontenelle, Flaming Gorge,
<br />
<br />8
<br />
|