M. Smolen - Academia.edu (original) (raw)

Papers by M. Smolen

The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The... more The Oklahoma Cooperative Extension Service periodically issues revisions to its publications. The most current edition is made available. For access to an earlier edition, if available for this title, please contact the Oklahoma State University Library Archives by email at libscua@okstate.edu or by phone at 405-744-6311.Biosystems and Agricultural Engineerin

Figure 1. Legal systems for water rights are managed by the states. Most eastern states, where wa... more Figure 1. Legal systems for water rights are managed by the states. Most eastern states, where water is plentiful, have riparian systems, while western states, where water is more scarce, use prior appropriation systems. Whose Water Is It Anyway?

The work upon which this report is based was supported in part

Donnees bibliographiques concernant l'impact de ces sources, la qualite de l'eau de ruiss... more Donnees bibliographiques concernant l'impact de ces sources, la qualite de l'eau de ruissellement et la modelisation de la pollution par sources diffuses

Journal of aquatic ecosystem health, 1994

Ecological risk assessments provide a probabilitistic approach to analyzing and predicting ecosys... more Ecological risk assessments provide a probabilitistic approach to analyzing and predicting ecosystem responses to stress. We are evaluating the relationship between nonpoint source (NPS) phosphorus loading and the trophic status of the aquatic ecosystem. We are using SIMPLE (the Spatially Integrated Model for Phosphorus Loading and Erosion) to identify probable phosphorus sources in a watershed, simulate the phosphorus loading to

Transactions of the ASABE, 2010

Watershed Management to Meet Water Quality Standards and Emerging TMDL, 5-9 March 2005, Atlanta, Georgia

Sediment from eroding rural unpaved roads is suspected to be an important source of sediment that... more Sediment from eroding rural unpaved roads is suspected to be an important source of sediment that contributes to water quality degradation in rural watersheds. Unpaved rural roads in Oklahoma are a necessary part of the transportation system that supports agricultural producers and ...

World Environmental and Water Resources Congress 2009, 2009

Bioretention cell are gaining popularity as a stormwater best management practice (BMP). This can... more Bioretention cell are gaining popularity as a stormwater best management practice (BMP). This can be largely attributed to the fact that they present a broad range of potential benefits such as decreased runoff, thermal attenuation, aesthetics and improved water quality through various physical, chemical and biological processes. Ten prototype cells were constructed in Oklahoma as part of an ongoing demonstration project. The cells ranged in size from 19 m 3 to 435 m 3 , and the filter media incorporated fly ash to enhance phosphorus and heavy metal retention. Eight of the cells were installed in Grove, Oklahoma by a contractor, while the other two were constructed in Stillwater by the authors. This paper discusses engineering considerations, general design procedures, cell specifications, construction costs and issues that arose during construction.

Guidance for states in setting up water-quality programs is given. Recommendations and procedures... more Guidance for states in setting up water-quality programs is given. Recommendations and procedures are presented to focus resources to limited areas to achieve visible water quality improvements in a reasonable timeframe. The document reviews priority setting for water resources, planning, and organization of watershed projects; includes watershed-level targeting.

Thesis (Ph. D.)--Virginia Polytechnic and State University. Vita. Includes bibliographical refere... more Thesis (Ph. D.)--Virginia Polytechnic and State University. Vita. Includes bibliographical references (leaves 76-78). Photocopy of typescript original, 1975.

ACS Symposium Series, 1999

Page 1. Chapter 16 Best Management Practices to Reduce Pesticide and Nutrient Runoff fromTurf JH ... more Page 1. Chapter 16 Best Management Practices to Reduce Pesticide and Nutrient Runoff fromTurf JH Baird1, NT Basta2, RL Huhnke3, GV Johnson2, ME Payton4, DE Storm3, CA Wilson4, MD Smolen3, DL Martin5, and JT Cole5 ...

Transactions of the ASAE, 1983

A one-dimensional, infiltration model was used to simulate the infiltration process in sludge ame... more A one-dimensional, infiltration model was used to simulate the infiltration process in sludge amended mine soil. Simulation results indicated more rapid advance of the wetting front in sludge amended mine soil as compared with unamended mine soil. The simulation predicted that 1% addition of sludge results in 1.65-fold increase in cumulative infiltration, and 5% addition of sludge results in 2.85-fold increase in cumulative infiltration during a 3 h infiltration period. Further addition of sludge over 5%, however, did not cause any additional increase in infiltration.

Transactions of the ASAE, 1981

In the northern Great Plains, most runoff transport of N, and P to surface waters has historicall... more In the northern Great Plains, most runoff transport of N, and P to surface waters has historically occurred with snowmelt. In recent years, significant rainfall runoff events have become more frequent and intense in the region. Here, we examine the influence of landscape characteristics on hydrology and nutrient export in nine tributary watersheds of the Assiniboine River in Manitoba, Canada, during snowmelt runoff and with an early summer extreme rainfall runoff event (ERRE). All watersheds included in the study have land use that is primarily agricultural, but with differing proportions of land remaining as wetlands, grassland, and that has been artificially drained. Those watersheds with greater capacity for storage of water in surface depressions (noneffective contributing areas) exhibited lower rates of runoff and nutrient export with snowmelt. During the ERRE, higher export of total P (TP), but not total N, was observed from those watersheds with larger amounts of contributing area that had been added through artificial surface drainage, and this was associated primarily with higher TP concentrations. Increasing or restoring the storage of water on the landscape is likely to reduce nutrient export; however, the importance of antecedent conditions was evident during the ERRE, when small surface depressions were at or near capacity from snowmelt. Total P concentrations observed during the summer ERRE were as high as those observed with snowmelt, and N/P ratios were significantly lower. If the frequency of summer ERREs increases with climate change, this is likely to result in negative water quality outcomes.

Transactions of the ASAE, 1984

A distributed parameter hydrologic model was used to estimate the average annual sediment yield f... more A distributed parameter hydrologic model was used to estimate the average annual sediment yield from subareas of an agricultural watershed under spatially distinct land management strategies. The sediment yield output from the hydrologic simulation was used to estimate activity coefficients for a linear programming model to identify the management strategy with the least sediment yield at acceptable farm income levels. The analysis showed that substitution of conservation management practices could be highly cost-effective if they produce profit levels near those of conventional, more erosive practices.

Transactions of the ASAE, 1999

We used the Matlock Periphytometer to measure in situ nutrient limitations and trophic status at ... more We used the Matlock Periphytometer to measure in situ nutrient limitations and trophic status at five stream sites in the Bosque River Watershed in north-central Texas during July 1997. Periphytic chlorophyll a production from the Matlock Periphytometer was also used as an indicator of baseline primary productivity and of maximum primary productivity (MPP) in response to nutrient enrichment (nitrogen and phosphorus). The measured MPP was interpreted to represent the rate of periphytic growth when nutrients are not limiting. We developed a lotic ecosystem trophic status index (LETSI) using the ratio of baseline primary productivity to MPP. Nitrogen (N) and phosphorus (P) limitations were evaluated using a modified LETSI as the ratio of either N or P enriched growth to MPP. The LETSI is by definition a functional index, and may provide a classification tool for lotic ecosystem trophic status. Using the LETSI indices, we observed differences in nutrient limitations in the streams and detected co-limitations of nitrogen and phosphorus at two of the stream sites.