The 14th Conference on Hydrology

2A.6
ENHANCED HYDROLOGIC PRODUCTS AND SERVICES UTILIZING ADVANCED MODELS AND PROCEDURES

Dean T. Braatz, NOAA/NWS, Chanhassen, MN; and S. D. Buan, M. M. DeWeese, W. H. Koellner, J. T. Stiman, J. T. Burant, and J. J. Ingram

The record setting floods of 1997 remind us of the significant threat which flooding has on the economic stability of our Nation. Within the United States, property losses exceeded $8.7 billion during 1997 compared to an average year where losses (averaged over the last 25 years) now exceed $4.1 billion and loss of life is at 133. The National Weather Service (NWS) recognizes that millions of dollars in economic benefits can be saved annually by providing its users with additional hydrologic information, extending forecast lead times, producing long range forecasts and devising forecast products with formats that assist decision makers with the assessment of risk. To meet this challenge, the NWS has begun to implement advanced hydrologic and hydraulic models, new forecast procedures and displays, and to develop inter-agency commitments beyond existing agreements of data sharing. These enhanced activities are occurring as part of Advanced Hydrologic Prediction System (AHPS) implementation and operations. AHPS was first implemented on the Des Moines River, Minnesota-Iowa, and is now entering its third year of operations for the basin. This first AHPS implementation occurred in cooperation with the Rock Island District, U. S. Army Corps of Engineers (RICE). Further cooperation between the NWS and RICE has enabled the NWS to begin issuing daily five-day forecasts for the Locks and Dams on the Illinois and Mississippi Rivers, in addition to the previous forecast sites along these rivers. The NWS's North Central River Forecast Center (NCRFC) and the RICE have broken new ground in their commitment of sharing times-series information of model output from both agencies. A wide range of product user requirements are being met by incorporating this shared information into the forecast decision process. This discussion will provide a synopsis of models implemented, inter-agency coordination and interfacing with users in the development of a suite of hydrologic products to maximize the associated economic benefits.


The 14th Conference on Hydrology