Download or read book Estimating a Range of Flow Rates Resulting from Extreme Storm Events Within the Wekiva River Watershed Through Statistical Testing and Modeling written by Wesley K. Koning and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The middle portion of the St. Johns River is located in East-Central Florida, USA. This region of the St. Johns River is increasingly subject to urbanization and conversion of forest areas to agricultural land. Overall, these changes mean that future flood events in the area could adversely impact local citizens. Therefore, the examination of extreme flood events and resiliency to such events is critical. The purpose of this preliminary study is to explore a range of practical applications to estimate extreme flood flows at watercourses within the Middle St. Johns River Basin, focusing specifically upon the Wekiva River sub-basin. The current work illustrates the overall technical methodology and provides estimates of extreme flood flows at different return frequencies using hydrologic modeling, statistical analysis, and supporting published reports. Altogether, once fully integrated and complete, the methods will permit predictions at a range of possible flood flows as a result of an extreme storm event at any place along the watercourse.
Download or read book Modelling Uncertainty in Flood Forecasting Systems written by Shreeda Maskey and published by CRC Press. This book was released on 2004-11-23 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like all natural hazards, flooding is a complex and inherently uncertain phenomenon. Despite advances in developing flood forecasting models and techniques, the uncertainty in forecasts remains unavoidable. This uncertainty needs to be acknowledged, and uncertainty estimation in flood forecasting provides a rational basis for risk-based criteria. This book presents the development and applications of various methods based on probablity and fuzzy set theories for modelling uncertainty in flood forecasting systems. In particular, it presents a methodology for uncertainty assessment using disaggregation of time series inputs in the framework of both the Monte Carlo method and the Fuzzy Extention Principle. It reports an improvement in the First Order Second Moment method, using second degree reconstruction, and derives qualitative scales for the interpretation of qualitative uncertainty. Application is to flood forecasting models for the Klodzko catchment in POland and the Loire River in France. Prospects for the hybrid techniques of uncertainty modelling and probability-possibility transformations are also explored and reported.
Download or read book Determination of Extreme Flood Events in the Black Creek Julington Creek Dubin Creek Big Davis Creek Ortega River and Pablo Creek Sub basins of the Lower St Johns River Basin Florida USA written by Samantha K. Kovalenko and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme flood estimation is a continuously developing field of research. Economic and community well-being are dependent on flood risk preventative planning, which can only be successfully implemented through sound flood estimating methods. Without the execution of proper flood prevention measures, many communities remain at risk. In addition to a new extreme flood estimation methodology, this research presents a new approach to establish flood estimates. Traditionally, more than one flood estimate per return frequency storm does not exist. This research produced a set of 10-, 25-, 50-, and 100-year flood estimates for the Black Creek, Julington Creek, Durbin Creek, Big Davis Creek, Ortega River, and Pablo Creek sub-basins in northeastern Florida. The flood estimates for each recurrence interval were developed using HSPF hydrologic modeling, statistical computations involving the use of the Log-Pearson Type III and Power Law distribution, and analysis of existing Federal Emergency Management Agency (FEMA) Flood Insurance Study (FIS) estimates. Sensitivity of parameters such as land-use change, precipitation frequency values (median versus 90th percentile), and rainfall distribution (uniform versus Synthetic Type II Modified) were assessed in the resulting extreme flows determined from the HSPF Model. The hydrologic modeling component presented in this research utilizes the St. John's River Water Management District's (SJRWMD) powerful Hydrologic Simulation Program - FORTRAN (HSPF) model. This is a new methodology as the SJRWMD's HSPF model has previously never been used to estimate extreme flood flows. This methodology has the capability of being implemented in any sub-basin along the St. Johns River in Florida.
Download or read book Flood Assessment written by Eric W. Harmsen and published by CRC Press. This book was released on 2017-12-22 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 7,000 people lose their lives and nearly 100 million people are adversely affected by floods each year worldwide. Flooding occurs in almost every part of the world and is the result of extreme rainfall. Severe flooding also costs billions of dollars each year in damage and economic losses. This new volume focuses on two detailed studies that employ physically based hydrologic models to predict flooding in the particularly challenging environment of small watersheds with mountainous terrain and high intensity/high variability rainfall.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jacksonville Harbor Project in Duval County Florida April 2014 written by United States. Office of the Assistant Secretary of the Army (Civil Works) and published by . This book was released on 2015 with total page 1474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catchment Modeling and Initial Parameter Estimation for the National Weather Service River Forecast System written by Eugene L. Peck and published by . This book was released on 1976 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The system (NWSRFS) of conceptual hydrologic models and other procedures, used in the operational river forecasting program of the United States National Weather Service, is briefly described. Complete information on the system as it existed in 1972 was published. However, since then the operational system has been expanded and revised frequently. Information on new procedures will be published in the technical literature. A major revision has been made in the soil moisture accounting for the catchment model. The components for soil moisture accounting of the Sacramento Model have replaced those of the modified Stanford Model as used in the original system. The conceptual features and characteristics of the Sacramento Model are discussed. The demonstration in the workshop of this symposium will be limited to the catchment model.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Depth area Ratios in the Semi arid Southwest United States written by Raymond M. Zehr and published by . This book was released on 1984 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA Technical Memorandum NWS HYDRO written by United States. National Weather Service and published by . This book was released on 1979-02 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA Technical Memorandum NWS HYDRO written by and published by . This book was released on 1977 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Verification of Mathematical and Physical Models in Hydraulic Engineering written by American Society of Civil Engineers. Hydraulics Division and published by American Society of Civil Engineers. This book was released on 1978 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the St Johns River Water Supply Impact Study written by National Research Council and published by National Academies Press. This book was released on 2009-10-08 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The St. Johns River is the longest river in Florida, containing extensive freshwater wetlands, numerous large lakes, a wide estuarine channel, and a correspondingly diverse array of native flora and fauna. Water resource management in the river's watershed is the responsibility of the St. Johns River Water Management District (the District). The District must provide water for the region's 4.4 million residents as well as numerous industrial and agricultural users, all while protecting natural systems within the river basin. With population growth in the watershed expected to surpass 7.2 million in 2030, the District, through its water resources planning process, has begun to identify alternative sources of water beyond its traditional groundwater sources, including the potential withdrawal of 262 million gallons per day from the St. Johns River. To more comprehensively evaluate the environmental impacts of withdrawing this water from the river, the District embarked on a two-year Water Supply Impact Study (WSIS), and requested the involvement of the National Research Council. The present volume reviews the Phase I work of the WSIS and provides recommendations for improving Phase II.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1975 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Five to 60 minute Precipitation Frequency for the Eastern and Central United States written by Ralph H. Frederick and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improvement of Hydrologic Simulation by Utilizing Observed Discharge as an Indirect Input written by Walter T. Sittner and published by . This book was released on 1979 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
