3 edition of 7-day low flows and flow duration of Alabama streams through 1973 found in the catalog.
7-day low flows and flow duration of Alabama streams through 1973
Eugene C. Hayes
by Geological Survey of Alabama, Division of Water Resources in University
Written in English
|Statement||by Eugene C. Hayes ; prepared by United States Geological Survey in cooperation with Geological Survey of Alabama.|
|Series||Bulletin - Geological Survey of Alabama ; 113|
|Contributions||Geological Survey (U.S.), Geological Survey of Alabama.|
|LC Classifications||QE81 .A15 no. 113, GB1225.A2 .A15 no. 113|
|The Physical Object|
|Pagination||163 p. :|
|Number of Pages||163|
|LC Control Number||79620874|
Peak discharge probability relationships, hourly flow data and daily mean streamflow data, are used to construct probabilistic hydrographs. The peak discharge probability relationship uses data from gauge stations or from rainfall–runoff modelling combined with palaeoflood discharges (Figure (f)).Flood runoff duration can be obtained either from observed extreme storm duration (assuming. 1)common in humid regions where groundwater flows into streams. 2)common in humid regions where some of the stream water flows into the groundwater system. 3)common in arid regions where groundwater flows into streams. 4)common in arid regions where some of the stream water flows into the groundwater system.
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The median annual 7-day low flow, in cubic feet per second per square mile. Median annual 7-day low flow. The annual 7-day low flow having a recurrence interval of 2 years (7-day 2-year low flow); that is, the mean flow for 7 consecu tive days to be expected as an . "As Long as the Rivers Flow" is an account of the author's last summer before he and his siblings were taken away to residential school. It was and Larry Loyie is ten, on the brink of learning from his extended family how to survive and live off the This book is in a recommended reading list for Aboriginal Resources for young people.4/5.
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7-day low flows and flow duration of Alabama streams through University: Geological Survey of Alabama, Division of Water Resources, (OCoLC) Material Type: Government publication, State or province government publication: Document Type: Book: All Authors / Contributors.
Low-flow discharge information is often required for managing municipal or industrial water supplies, dilution and transport of wastes, and fish and wildlife conservation.
The 7-day, 2-year (7Q2) and the 7-day, year (7Qjo) low-flow discharges are commonly Cited by: 2. 2 LOW-FLOW CHARACTERISTICS OF ALABAMA STREAMS During the second phase of the study, new methods were developed to estimate two low-flow characteristics of Alabama streams the 7-day, 2-year (7Q2) and the 7-day, year (7Qio) low flow.
The 7Q2 and 7Qio are the discharges at 2-year and year recurrence intervals taken fromCited by: Estimates of minimum 7-day average discharges with recurrence intervals of 2 and 10 years for continuous-record gaging stations are presented in this report.
Low-flow frequency discharge estimates for partial-record stations are also presented. These discharge estimates were computed by relating base-flow discharge measurements at the partial- record stations to daily-mean discharge. Updating Low-Flow Statistics at USGS Streamgages and Regionalization of Selected Low-Flow Characteristics for Alabama Streams.
INTRODUCTION. As part of their mission to protect public health and aquatic ecosystems, Alabama state agencies need accurate and representative streamflow statistics to establish realistic and applicable criteria for both water quality and water quantity (fig.
A new procedure for estimating the 7-day, 2-year and the 7-day, year low flow of ungaged Alabama streams is based on geology, drainage area, and mean annual precipitation. One equation for each of the two low-flow frequencies applies statewide to all natural flow streams; the equations do not apply to streams where flow is significantly altered by activities of man.
Low-Flow Frequency and Flow-Duration Characteristics of Selected Streams in Alabama Through March By Toby D. Feaster and Kathryn G. Lee Abstract Low-flow statistics are needed by water-resource engineers, planners, and managers to protect and manage the water resources of Alabama.
The accuracy of these statisticsCited by: 1. Information on low-flow characteristics of streams is essential for the management of water resources. This report provides equations for estimating the 1- 7- and day mean low flows for a recurrence interval of 10 years and the harmonic-mean flow at ungaged, unregulated stream sites in Indiana.
SIRMagnitude and Frequency of Floods on Small Rural Streams in Alabama; WRIRLow-flow and flow-duration characteristics of Alabama streams; Alaska.
SIREstimating flood magnitude and frequency at gaged and ungaged sites on streams in Alaska and conterminous basins in Canada, based on data through water year flow, monthly mean flows, flow-duration percentiles, and low-flow frequencies (such as the 7-day, 0-year low flow) for less than half of the states.
All equations available for estimat-ing streamflow statistics other than flood-frequency statistics assume rural (non-regulated, non-urbanized) conditions. In the USA, the most widely used indices are 7-day year low flow (7Q10) and 7-day 2-year low flow (7Q2), which are defined as the lowest average flows that occur for a consecutive 7-day period at the recurrence intervals of 10 and 2 years, respectively (e.g.
Characteristics of low flows, ).Cited by: Figure 8 is a plot of the relation between relative discharge and flow-duration frequency for Illinois streams as determined from the data of Graf (). As can be seen from the figure, the average flow in Illinois streams is one that is exceeded about 30 percent of the time.
Station Number Station name Date/Time Gage height, feet Dis-charge, ft3/s Long-term median flow 5/28 Autauga County: through November) when minimum stream Flow occurs, can result in flows of insufficient quantity and unacceptable quality for surface-water users.
A low-flow characteristic is defined a^ the annual minimum average discharge for a selected consecutive-day period for a given recurrence interval in years. View The Flow Thresholds This Table Is Based On ** Special thanks to StreamBeam for the Blackburn, Mulberry, and Short Creek gauge data.
If you see anything that needs to be added or modified LET US KNOW LET US KNOW. Stream flows occurring during periods of impairment were typically near established 7Q10 (the minimum 7-day average flow over a year recurrence interval) levels.
Dissolved oxygen impairments in Catoma Creek were attributable to low flows and high temperatures as evidenced during summer sampling events. Based on ADEM’s data analysis, a File Size: 1MB.
Screenshot of National Streamflow Statistics Program (NSS) data entry. Equations are available for estimating other statistics, such as the mean annual flow, monthly mean flows, flow-duration percentiles, and low-flow frequencies (such as the 7-day, year low flow.
Determining Subsurface Drainage Flows. Flow Duration and Water Yield. Planning for Low Flow Water Shortages. Runoff Characteristics–Pollutograph. Problems. Stream Processes. Introduction. Interaction of Streams with the Landscape. Stream Orders. Stream Biota. Stream Characteristics. Stream Stability and Sediment Transport.
Meander Migration. The San Saba River is a spring-fed stream located in central Texas on the northern boundary of the Edwards Plateau ().The San Saba River rises in Schleicher County and runs approximately miles east to its confluence with the Colorado River in San Saba County (Brune, ; Belisle and Josselet, ).This region of the Edwards Plateau is characterized by rolling hills with broad flat.
To illustrate the salinity structure of Mobile Bay during low river discharge the low flow periods of late summer through the fall of will be utilized.
The lowest 7-day average flow during this period was m^ s e c " ' recorded during October 1 3 - 1 9. Direct impact of low flow Cited by:. The comprehensive literature review performed by Smakhtin () is a benchmark study on low flow hydrology in which low flow was discussed in all aspects.
For characterizing and evaluating low flows, flow duration curves, recession analysis, low flow indices and frequency analysis have frequently been used (Bayazit & Onoz ).Frequency analysis has focused on fitting a theoretical Cited by: 5.Several methods for estimating streamflow characteristics for low and peak flows for streams on Tutuila, American Samoa are presented.
These methods, derived from frequency, flow-duration, and regression analyses, allow the user to compute estimates for the 7-day low flow with 2-year and year recurrence intervals; the median flow; the mean.Low-Flow Characteristics of Indiana Streams U.S.
Geological Survey Water-Resources Investigations Report Physiography of Indiana with base runoff for the 7-day low flows at the year recurrence Flow-duration curves for a stream in southern Indiana (Back Creek) and a stream Cited by: 2.