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<br />. <br /> <br />. <br /> <br />. <br /> <br />Curt's New File and Directory: D:\wpd\proj\gcip\gcipsow98-785.WPD (WOlD ER785) <br /> <br />Statement of Work for Proposal No. GEWEX97 -0045 <br /> <br />Demonstration of Improved Operational Water Resources Management <br />Through Utilization of Better Snow Water Equivalent Information <br /> <br />Principal Investigator: Arlin B. Super <br /> <br />The goal of this cooperative effort between the Bureau of Reclamation (Reclamation) and NOAA <br />is to demonstrate improved operational water resourCHS management resulting from better snow <br />water equivalent (SWE) information. This goal will be pursued by helping merge NEXt generation <br />weather RADar (NEXRAD) estimates of SWE into the current National Weather Service (NWS) <br />scheme of SWE and snow cover mapping (which does not use radar), and by demonstrating that <br />the resulting improved streamflow forecasts are beneficial to Reclamation's ability to prudently <br />manage water resources for multipurposes. <br /> <br />Reclamation will work closely with the NWS National Operational Hydrologic Remote Sensing <br />Center (NOHRSC) in Chanhassen, MN, toward improving NOHRSC-produced gridded fields of <br />SWE and snow cover. These NOHRSC products are vital for initialization of various models that <br />predict snowmelt and streamflow. Reclamation is a mi3jor Federal water resources management <br />agency. Therefore, improved SWE and snow cover mapping, which directly lead to more accurate <br />streamflow predictions, significantly impact Reclamation's ability to effectively manage its <br />reservoirs, hydroelectric facilities, water distributions systems and associated infrastructure. <br /> <br />I. Reclamation will accomplish the following during the! first year of effort: <br /> <br />1. Access near real-time NEXRAD radar Level III reflectivity products from the Chanhassen, MN, <br />(KMPX) WSR-88D radar through a NIDS vendor. <br /> <br />2. Modify Reclamation's Snow Accumulation Algorithm (SAA) to use Level III reflectivities from <br />KMPX as input to the SAA. <br /> <br />3. Use the modified SAA to provide near real-time SVVE estimates with a stand alone computer <br />that ingests the Level III data, runs the SAA, displays visual outputs and provides numerical <br />outputs. <br /> <br />4. Develop software to display the SWE estimates f()r the past 1 and 3 hours, and since the <br />beginning of each snow storm, on the same computer used to run the SAA. <br /> <br />5. Develop the means to convert radar SWE estimates from polar coordinates into a gridded field <br />coordinate system specified by NOHRSC. <br /> <br />6. Develop the means to provide gridded fields of radar-estimated SWE to NOHRSC in a timely <br />fashion. <br /> <br />1 <br />