The sizes of salmonid spawning gravels

Kondolf, G. Mathias; Wolman, M. Gordon

doi:10.1029/93wr00402

Cited by 339 publications

(342 citation statements)

References 15 publications

Supporting

Mentioning

327

Contrasting

Unclassified

Order By: Relevance

“…This parameter is a suitable choice for a lognormally distributed material as it coincides with the geometric mean and mode sizes. Nevertheless, the grain size distribution for many deposits is not lognormal; rather, it tends to be skewed (Kondolf and Wolman, 1993). Thus, the median may not be the most appropriate parameter to describe the grain size distribution for many deposits.…”

Section: Resultsmentioning

confidence: 99%

Representative Particle Size of Sediment in Storm Sewer Inlets

Almedeij¹,

Ahmad²,

Alhumoud³

2010

American J. of Environmental Sciences

View full text Add to dashboard Cite

Problem statement: The aim of this study was examine the representative particle size of noncohesive sediment samples collected from different storm sewer inlets in residential catchments within Kuwait. Approach: A number of 25 sediment samples were collected from storm sewer inlets located in five residential areas in Kuwait: Bayan, Al-Nuzha, Al-Feiha, Al-Andalos and Al-Rumaithya. All the impervious areas for the selected sites are hydraulically connected to the drainage system, including the roofs for houses which are piped to the roads with gutters and thus have pronounced influence on catchment hydrology. Results: It was found that the sample median and mean particle sizes vary locally within each site and spatially compared to others, while the mode is invariant for most of the cases. This result suggests that the mode particle size is more stable in terms of magnitude than the median and mean and may constitute a robust estimator for sediment sizes reflecting the similarity found in watershed characteristics. Conclusion/Recommendations: This is the first such study conducted in Kuwait on sediment samples collected from five residential storm sewer inlets were employed to examine the average particle size readily available for transportation into the conduit.

show abstract

Section: Resultsmentioning

confidence: 99%

Representative Particle Size of Sediment in Storm Sewer Inlets

Almedeij¹,

Ahmad²,

Alhumoud³

2010

American J. of Environmental Sciences

View full text Add to dashboard Cite

show abstract

“…Textural fining caused by hydraulic roughness also has important implications for the availability of salmonid spawning habitat. Salmonids select specific grain sizes in which to spawn [Kondolf and Wolman, 1993]. Comparison of preferred spawning-gravel sizes and our field data suggest that textural fining caused by banks, bars, and wood can create usable spawning gravels in channels otherwise too coarse to be hospitable for spawning (Figure 3).…”

Section: Discussionmentioning

confidence: 99%

Effects of hydraulic roughness on surface textures of gravel‐bed rivers

Buffington¹,

Montgomery²

1999

Water Resources Research

269

302

View full text Add to dashboard Cite

Abstract. Field studies of forest gravel-bed rivers in northwestern Washington and southeastern Alaska demonstrate that bed-surface grain size is responsive to hydraulic roughness caused by bank irregularities, bars, and wood debris. We evaluate textural response by comparing reach-average median grain size (Ds0) to that predicted from the total bank-full boundary shear stress (r0b), representing a hypothetical reference condition of low hydraulic roughness. For a given r%f, channels with progressively greater hydraulic roughness have systematically finer bed surfaces, presumably due to reduced bed shear stress, resulting in lower channel competence and diminished bed load transport capacity, both of which promote textural fining. In channels with significant hydraulic roughness, observed values of Ds0 can be up to 90% smaller than those predicted from rob. We find that wood debris plays an important role at our study sites, not only providing hydraulic roughness but also influencing pool spacing, frequency of textural patches, and the amplitude and wavelength of bank and bar topography and their consequent roughness. Our observations also have biological implications. We find that textural fining due to hydraulic roughness can create usable salmonid spawning gravels in channels that otherwise would be too coarse.

show abstract

“…This finding could be related to the higher transport of the bedload and faster changes in the morphology of the troughs. Other GSD parameters, e.g., negative Skl, are typical for natural gravel-bed channels [23,31,64,65].…”

Section: Discussionmentioning

confidence: 99%

Grain Size Distribution of Bedload Transport in a Glaciated Catchment (Baranowski Glacier, King George Island, Western Antarctica)

Sziło

Bialik

2018

Water

View full text Add to dashboard Cite

Abstract:The relationships among grain size distribution (GSD), water discharge, and GSD parameters are investigated to identify regularities in the evolution of two gravel-bed proglacial troughs: Fosa Creek and Siodło Creek. In addition, the potential application of certain parameters obtained from the GSD analysis for the assessment of the formation stage of both creeks is comprehensively discussed. To achieve these goals, River Bedload Traps (RBTs) were used to collect the bedload, and a sieving method for dry material was applied to obtain the GSDs. Statistical comparisons between both streams showed significant differences in flow velocity; however, the lack of significant differences in bedload transport clearly indicated that meteorological conditions are among the most important factors in the erosive process for this catchment. In particular, the instability of flow conditions during high water discharge resulted in an increase in the proportion of medium and coarse gravels. The poorly sorted fine and very fine gravels observed in Siodło Creek suggest that this trough is more susceptible to erosion and less stabilized than Fosa Creek. The results suggest that GSD analyses can be used to define the stage of development of riverbeds relative to that of other riverbeds in polar regions.

show abstract

The sizes of salmonid spawning gravels

Cited by 339 publications

References 15 publications

Representative Particle Size of Sediment in Storm Sewer Inlets

Representative Particle Size of Sediment in Storm Sewer Inlets

Effects of hydraulic roughness on surface textures of gravel‐bed rivers

Grain Size Distribution of Bedload Transport in a Glaciated Catchment (Baranowski Glacier, King George Island, Western Antarctica)

Contact Info

Product

Resources

About