Application of Acoustic Hydrosurvey Technology to the Mapping of Eelgrass (
Acoustic hydrosurvey technology provides an efficient and accurate means of surveying the distribution of submerged aquatic vegetation under some circumstances. The San Francisco District,...
Evaluation of Airborne Video Imagery for Distinguishing Intertidal Oyster Reefs
We evaluated the effectiveness of airborne video imagery in distinguishing and mapping oyster (Crassostrea virginica) reefs in Aransas Bay on the southern Texas gulf coast. Imagery obtained...
The History of the Black Sea Coastal Zone Studies
The exploration of the Black Sea coast by Russian hydrographers began in the early 19th century. Hydrographic expeditions of Budishev (1802) and Zarudny (80-ties of the 19th century) provided...
Fisheries in the Southern North Sea
Because of its hydrographic and bathymetric characteristics, the southern North Sea supports one of the most productive fisheries in the world. In this chapter, these fisheries are reviewed...
A Study on Local Residents' Evaluation of Residential Waterfront Area
In the present study, a questionnaire survey was conducted in 9 cities in Japan to investigate the utilization perception and utilization of local residents to neighborhood waterfront...
Including Uncertainty in Flood Control Design
Design Hydrographs in Coastal Wetland Watersheds
The use of synthetic unit-hydrographs for hydraulic design in ungaged watersheds has been an accepted practice for over 50 years. In southeastern U.S. coastal regions, which contain extremely...
Lag Relations for Semi-Arid Regions and Urban Areas
The use of synthetic unit hydrographs often requires the estimation of lag or other travel time parameters. Several procedures are available for estimating such unit hydrograph parameters....
Back to the Unit Hydrograph Method
In this paper, the basic single area unit hydrograph model is shown to represent a highly complex, rational, link-node model which includes (i) variable effective rainfall distributions...
A Potential Problem with Mean Dimensionless Hydrographs at Ungaged Sites
A flood hydrograph for an ungaged stream site can be estimated from a mean dimensionless hydrograph and estimates of instantaneous peak discharge (Q) and total storm runoff volume (V)....
Robust Method to Generate Multiple Unit Hydrographs
When performing a rainfall runoff study, it is sometimes necessary to change the duration of a given unit hydrograph. The instantaneous unit hydrograph (IUH) provides an ideal tool to...
Estimation and Regionalization Procedures of Nash's Instantaneous Unit Hydrograph
A 'total fit' method is suggested for computing Nash's instantaneous unit hydrograph (IUH) which minimizes the errors of all ordinates between the observed and generated hydrographs. Previous...
Minimum Streamflow Assessment in Italian Scenarios
Overall water availability and acceptable carrying capacity seem to be at their limits today in Italy. A specific procedure aiming at minimum streamflows analysis and evaluation has been...
PMF Estimation for a Sparsely Gaged Watershed
This paper describes a procedure used to determine the design-basis and probable maximum flood (DBF and PMF) for Jiguey Dam located in the Dominican Republic. This dam is situated upstream...
Unit Hydrograph Estimation Procedures Using Orthogonal Functions
All unit hydrograph estimation procedures based on orthogonal functions are reviewed in this paper. A more physically based orthogonal function (a gamma function) for unit hydrograph estimation...
Artificial Neural Networks as Unit Hydrograph Applications
A simple artificial neural network is shown to have the same structure as the application of a unit hydrograph. An artificial neural network representing such an application was constructed,...
Predicting Runoff from Rainfall Using Neural Networks
This paper shows the modeling technique, neural nets, to be successful in predicting the hydrograph of a storm from the hyetographs of storms on the same basin. A root mean square error...
A National System for Threshold Runoff Estimation
Threshold runoff is the amount of effective (or excess) rainfall of a given duration uniformly distributed over a certain catchment that is just enough to cause flooding at the outlet...
Storm Sewer Analysis & Design Utilizing Hydrographs
In this paper a computer model, designated STORM.HYD, for the analysis and design of storm sewer systems utilizing a hydrograph procedure is presented and discussed. This model which actually...
Analyzing Uncertainty of IUH of Nash
Uncertainties in hydrologic modeling are the primary factors affecting the reliability of hydraulic structures. Among various hydrologic rainfall-runoff models for engineering applications,...
Return to search