00781521

Component

https://doi.org/10.3141/1690-20

http://scholar.google.com...wood&publication_year=1999

Factors related to the probability of joint flooding on paired streams were investigated. Stream pairs were considered to have flooded jointly at the design-year flood threshold (corresponding to the 2-, 10-, 25-, or 50-year instantaneous peak stream flow) if peak stream flows at both streams in the pair were observed or predicted to have equaled or exceeded the threshold on a given calendar day. Daily mean stream-flow data were used as a surrogate for instantaneous peak stream-flow data to determine which flood thresholds were equaled or exceeded on any given day. Instantaneous peak stream-flow data, when available, were used preferentially to assess when the flood threshold was exceeded. Observed probabilities of joint flooding were computed as the ratios of the number of days when stream flows at both streams concurrently equaled or exceeded their flood thresholds (events) to the number of days when stream flows at either stream equaled or exceeded its flood threshold (trials). Logistic regression equations for estimating the probability of joint flooding at the 2-year flood threshold were developed on the basis of event-trial ratio and basin characteristic data. Distance between drainage area centroids, the ratio of the smaller drainage area to the larger drainage area, mean drainage area, and the centroid angle adjusted 30 degrees were the characteristics most closely associated with the probability of joint flooding on paired streams in Ohio. In general, the probability of joint flooding decreased with an increase in centroid distance and increased with increases in drainage area ratio, mean drainage area, and centroid angle adjusted 30 degrees.

This paper appears in Transportation Research Record No. 1690, Roadside Safety and Other General Design Issues.

English

p. 175-185

1999

Transportation Research Record

0309071208

Figures (6) ; References (16) ; Tables (2)

Drainage basins; Floods; Probability; Regression analysis; Streamflow; Streams

Joint flooding; Paired streams

Ohio

Data and Information Technology; Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

TRIS, TRB, ATRI

Jan 21 2000 12:00AM

• CHOOSING AN INVENTORY DATA COLLECTION SYSTEM
• CONNECTING MINNESOTA: SUPERHIGHWAYS TO INFORMATION SUPERHIGHWAYS
• CRASHWORTHINESS OF ROADSIDE FEATURES ACROSS VEHICLE PLATFORMS
• DEVELOPMENT OF A FLARED END TERMINAL THAT MEETS CRITERIA OF NCHRP REPORT 350: THE REGENT SYSTEM
• DEVELOPMENT OF A FLARED ENERGY-ABSORBING TERMINAL FOR W-BEAM GUARDRAILS
• EFFECTS OF COHESIVE MATERIAL PROPERTIES ON LOCAL SCOUR AROUND PIERS
• EFFECTS OF POST AND SOIL STRENGTH ON PERFORMANCE OF MODIFIED ECCENTRIC LOADER BREAKAWAY CABLE TERMINAL
• HEAVY-GOODS VEHICLE COLLISIONS WITH STEEL ROAD SAFETY BARRIERS: COMBINED INFLUENCES OF POSITION OF CENTER OF MASS AND TIRE-PAVEMENT FRICTION
• HYDRODYNAMIC COUNTERMEASURES FOR LOCAL PIER SCOUR
• INFRASTRUCTURE INVENTORY AND CONDITION ASSESSMENT USING AIRBORNE LASER TERRAIN MAPPING AND DIGITAL PHOTOGRAPHY
• REEXAMINATION OF ROADSIDE ENCROACHMENT DATA (WITH DISCUSSION AND CLOSURE)
• RESOURCE SHARING: WIRELESS TELECOMMUNICATIONS SITE LEASE RATES
• REUSABLE HIGH-MOLECULAR-WEIGHT, HIGH-DENSITY POLYETHYLENE CRASH CUSHIONS FOR WIDE HAZARDS
• ROADSIDE SAFETY ANALYSIS PROGRAM AS A TOOL FOR ECONOMIC EVALUATION OF ROADSIDE SAFETY PROJECTS (WITH DISCUSSION AND CLOSURE)
• SOME EXPERIENCE WITH GEOSPATIAL IMAGERY AND ROUTE OPTIMIZATION
• SURVEYOR: MOBILE HIGHWAY INVENTORY AND MEASUREMENT SYSTEM
• TWO-DIMENSIONAL MODELING OF COLLISION DYNAMICS OF DEFLECTING CONCRETE BARRIERS
• USING LS-DYNA SIMULATION TO SOLVE A DESIGN PROBLEM: BULLNOSE GUARDRAIL EXAMPLE
• VARIATION IN CHARACTERISTICS OF ABRADED ROADWAY PARTICLES AS A FUNCTION OF PARTICLE SIZE: IMPLICATIONS FOR WATER QUALITY AND DRAINAGE
• VIDEOLOG ASSESSMENT OF VEHICLE COLLISION FREQUENCY WITH CONCRETE MEDIAN BARRIERS ON AN URBAN HIGHWAY IN CONNECTICUT