Estimates of roughness coefficients for selected natural stream channels with vegetated banks in New York

Coon, William F.

doi:10.3133/ofr93161

Cited by 27 publications

(34 citation statements)

References 3 publications

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“…As flow approaches bank-full stage, however, roughness may asymptotically approach a constant value, as shown by several previous investigations (Limerinos, 1970;Bray, 1979;Sargent, 1979;Griffiths, 1981;Jarrett, 1985;Blodgett, 1986;Hicks and Mason, 1991;Coon, 1995).…”

Section: Flow Depth and Magnitudementioning

confidence: 60%

“…The verification-site locations were selected to meet, as closely as possible, criteria presented by Dalrymple and Benson (1967) for indirect measurement of discharge by the slope-area method, and guidelines presented by Jarrett and Petsch (1985) and Coon (1995) for required hydraulic conditions and reach characteristics for accurate n-verification measurements. The site conditions that relate to the specified criteria are summarized as follows.…”

Section: Site Selectionmentioning

confidence: 99%

“…For verification measurements in which discharge was measured with a current meter, the water surface was marked with flagging at the time the discharge measurement was taken. Adjustments were made to the elevation of the markers if the stage or water surface was rising or falling during the current-meter measurement (Coon, 1995). Crest-stage gages were installed at several sites to aid in obtaining accurate peak water-surface elevations at cross sections.…”

Section: Data Collectionmentioning

confidence: 99%

“…This requirement limits verification computations to unit channels that do not require segmenting or subdividing (Jarrett and Petsch, 1985). Although cc can be much larger than 1.00 in natural channels (Jarrett, 1985), any resulting error in the computation of n is assumed to be minimal because the effect of cc actually depends on the relative difference between the velocity-head coefficients from upstream and downstream cross sections rather than their actual magnitudes (Coon, 1995).…”

Section: Computation Of Reach Properties and Roughness Coefficientsmentioning

confidence: 99%

“…Past investigations include verified roughness coefficients for 50 selected stream channels in the United States (Barnes, 1967), 21 high-gradient streams in Colorado (Jarrett, 1985), 15 flood plains in the southeastern United States (Arcement and Schneider, 1989), 78 rivers and canals in New Zealand (Hicks and Mason, 1991), 11 gravelbed streams in California (Limerinos, 1970), 67 gravel-bed streams in Canada (Bray, 1979), and 21 perennial channels in New York State (Coon, 1995). However, only a few n-verification measurements have been obtained for dryland (Graf, 1988) stream channels in arid and semiarid regions of the southwestern United States (Aldridge and Garrett, 1973).…”

Section: Introductionmentioning

confidence: 99%

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Verification of roughness coefficients for selected natural and constructed stream channels in Arizona

Phillips¹,

Ingersoll²

1998

Professional Paper

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Section: Flow Depth and Magnitudementioning

confidence: 60%

Section: Site Selectionmentioning

confidence: 99%

Section: Data Collectionmentioning

confidence: 99%

Section: Computation Of Reach Properties and Roughness Coefficientsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Verification of roughness coefficients for selected natural and constructed stream channels in Arizona

Phillips¹,

Ingersoll²

1998

Professional Paper

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Impact of draining hilly lands on runoff and on‐site erosion: a case study from humid Ethiopia

Monsieurs

Dessie

Verhoest

et al. 2015

Earth Surf Processes Landf

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The use of drainage ditches on farmland has an impact on erosion processes both on-site and off-site, though their environmental impacts are not unequivocal. Here we study the runoff response and related rill erosion after installing drainage ditches and assess the effects of stone bunds in north Ethiopia. Three different land management systems were studied in 10 cropland catchments around Wanzaye during the rainy season of 2013: (1) the exclusive use of drainage ditches (locally called feses), (2) the exclusive use of stone bunds, and (3) a mixture of both systems. Stone bunds are an effective soil and water conservation technique, making the land more resistant against on-site erosion, and allowing feses to be installed at a larger angle with the contour. The mean rill volumes for the 10 studied cropland catchments during the rainy season of 2013 was 3.73 ± 4.20 m 3 ha À1 corresponding to a soil loss of 5.72 ± 6.30 ton ha À1 . The establishment of feses causes larger rill volumes (R = 0.59, N = 10), although feses are perceived as the best way to avoid soil erosion when no stone bunds are present. The use of feses increases event-based runoff coefficients (RCs) on cropland from c. 5% to values up to 39%. Also, a combination of low stone bund density and high feses density results in a higher RC, whereas catchments with a high stone bund density and low feses density have a lower RC. Peak runoff discharges decrease when stone bund density increases, whereas feses density is positively related to the peak runoff discharge. A multiple linear relation in which both feses and stone bund densities are used as explanatory variable, performs best in explaining runoff hydrograph peakedness (R 2 = 83%).

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Vegetation destruction during an extreme flood: Multilevel modelling of an entire river in southern Korea

Lee,

Baek

et al. 2023

Hydrological Processes

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Human‐induced climate change causes extreme weather events, and flooding induced by heavy rainfall in the riparian system is no exception. The southern Korean Peninsula witnessed record‐breaking rainfall during the summer of 2020, resulting in an extreme flood event that caused extensive damage to the riparian ecosystem along the Seomjin River. This study was aimed at identifying the composite factors of riparian vegetation destruction along the entire river. Based on a spatially explicit multilevel approach, it was found that large‐scale geomorphic characteristics (i.e., alternation of plain and valley topographies) appeared to be essential determinants of hydraulic characteristics of the channel (e.g., shear stress and specific energy), which were the leading causes of vegetation destruction. Moreover, at small spatial scales, several trees situated upstream of a vegetation patch protected other plants on the patch from the direct hydraulic impact of the flood, thereby serving as ‘shield’ trees. These findings indicate that scale‐dependent fluvial biogeomorphic processes take place during extreme flood events; hence, identifying the optimal scales of these processes and associated factors could help in further understanding riparian hydrology from a biogeomorphic point of view. This study suggests that hydrologists consider both geomorphological and ecological factors when studying hydrological processes.

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Estimates of roughness coefficients for selected natural stream channels with vegetated banks in New York

Cited by 27 publications

References 3 publications

Verification of roughness coefficients for selected natural and constructed stream channels in Arizona

Verification of roughness coefficients for selected natural and constructed stream channels in Arizona

Impact of draining hilly lands on runoff and on‐site erosion: a case study from humid Ethiopia

Vegetation destruction during an extreme flood: Multilevel modelling of an entire river in southern Korea

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