National hydrography dataset--linear referencing

Simley, Jeffrey D.; Doumbouya, Ariel

doi:10.3133/fs20123068

Cited by 16 publications

(24 citation statements)

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“…The stream classification is based on digitizing the "blue line mapping" and stream symbolization on US Geological Survey (USGS) 7.5 min quadrangle topographic maps. The blue-line mapping and perennial and ephemeral or intermittent classifications on topographic maps used in the NHD are based on aerial photo interpretation and have been extensively verified by field reconnaissance by the USGS at the time the map was compiled or revised (Simley, 2003). Errors may occur in the process of digitally capturing the topographic map information and incorporating it into the NHD flow lines.…”

Section: Data Sourcesmentioning

confidence: 99%

“…During unusually dry years, a normally perennial stream may cease flowing, becoming intermittent for days, weeks, or months depending on severity of the drought (Ivkovic, 2009). Perennial stream in the NHD dataset is defined as "stream contains water throughout the year, except for infrequent periods of severe drought" (Simley, 2006 function of perennial streams is to deliver runoff, particularly during low flow seasons when base flow is dominant. As discussed above, the pattern of Q b /P can be captured by the complementary Budyko-type curve shown in Eq.…”

Section: Perennial Stream Density As a Function Of Climate Aridity Indexmentioning

confidence: 99%

“…Errors may occur in the process of digitally capturing the topographic map information and incorporating it into the NHD flow lines. Climate change, landscape change, human engineering and other variables present opportunities for improvement (Simley, 2007).…”

Section: Data Sourcesmentioning

confidence: 99%

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Similarity of climate control on base flow and perennial stream density in the Budyko framework

Wang

2013

Hydrol. Earth Syst. Sci.

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Abstract. Connection between perennial stream and base flow at the mean annual scale exists since one of the hydrologic functions of perennial stream is to deliver runoff even in low flow seasons. The partitioning of precipitation into runoff and evaporation at the mean annual scale, on the first order, is captured by the ratio of potential evaporation to precipitation (E P /P called climate aridity index) based on Budyko hypothesis. Perennial stream density (D P ), which is obtained from the high resolution National Hydrography Dataset, for 185 watersheds declines monotonically with climate aridity index, and an inversely proportional function is proposed to model the relationship between D P and E P /P . The monotonic trend of perennial stream density reconciles with the Abrahams curve since perennial stream density is only a small portion of the total drainage density. The correlation coefficient between the ratio of base flow to precipitation (Q b /P ), which follows a complementary Budyko type curve and perennial stream density is found to be 0.74. The similarity between Q b /P and D P reveals the co-evolution between water balance and perennial stream network.

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Section: Data Sourcesmentioning

confidence: 99%

Section: Perennial Stream Density As a Function Of Climate Aridity Indexmentioning

confidence: 99%

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Similarity of climate control on base flow and perennial stream density in the Budyko framework

Wang

2013

Hydrol. Earth Syst. Sci.

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“…Other regional and spatial modelling tools, such as StreamStats, should be further developed to help characterize and estimate flows, including low flows and flow duration, for perennial and intermittent streams and flow start and stop locations. Other studies have demonstrated that new methods using regional regression equations can predict hydrologic permanence more accurately than previous methods and can be incorporated into programs like StreamStats in the future (Simley 2003;Bent and Steeves 2006;Rea and Skinner 2009). …”

Section: Tnwsmentioning

confidence: 96%

“…NHDPlus also has the capability of estimating mean annual flows based on regional regression approaches that can potentially help with the evaluation of hydrologic permanence, but doesn't estimate flow duration or low flows. New methods are being developed using spatial data and modeling to predict the proper classification of perennial and intermittent streams (Simley 2003). Some tools, such as StreamStats, will provide more detailed estimates of flow characteristics, including low flows, for rivers and streams across the U.S. in the future.…”

Section: Tnwsmentioning

confidence: 99%

Science and policy integration issues for stream and wetland jurisdictional determinations in a semi-arid region of the western U.S.

Caruso

2011

Wetlands Ecol Manage

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In the semi-arid western U.S., rivers and streams are becoming increasingly stressed and degraded, and wetlands lost, due to human development and associated management policies and actions that are generally ineffective for aquatic resources protection and restoration. There is often a significant disconnect between policy and management with science that leads to continued degradation of surface waters. Recent Supreme Court decisions and subsequent U.S. Army Corps of Engineers and Environmental Protection Agency guidance regarding determination of jurisdiction as 'waters of the US' that can be protected under Clean Water Act Section 404 (permitting discharge of dredged and fill materials into wetlands and other waters) is an example of this gap. This study identifies and evaluates key science and policy integration issues for stream and wetland jurisdictional determinations (JDs) in a semiarid region of the western U.S., including much of the Rocky Mountains, Great Plains and Colorado Plateau. Issues discussed include identification and evaluation of navigable waters, hydrologic permanence/flow duration of perennial and intermittent/ephemeral streams, stream order, significant nexus, aggregation of waters and effects, human impacts and changes, resource inventories and tools, and JD outcomes. Recommendations are also presented to help address the identified issues for more effective management.

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Disparity between state fish consumption advisory systems for methylmercury and US Environmental Protection Agency recommendations: A case study of the south central United States

Adams

Drenner

Chumchal

et al. 2015

Enviro Toxic and Chemistry

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Fish consumption advisories are used to inform citizens in the United States about noncommercial game fish with hazardous levels of methylmercury (MeHg). The US Environmental Protection Agency (USEPA) suggests issuing a fish consumption advisory when concentrations of MeHg in fish exceed a human health screening value of 300 ng/g. However, states have authority to develop their own systems for issuing fish consumption advisories for MeHg. Five states in the south central United States (Arkansas, Louisiana, Mississippi, Oklahoma, and Texas) issue advisories for the general human population when concentrations of MeHg exceed 700 ng/g to 1000 ng/g. The objective of the present study was to estimate the increase in fish consumption advisories that would occur if these states followed USEPA recommendations. The authors used the National Descriptive Model of Mercury in Fish to estimate the mercury concentrations in 5 size categories of largemouth bass-equivalent fish at 766 lentic and lotic sites within the 5 states. The authors found that states in this region have not issued site-specific fish consumption advisories for most of the water bodies that would have such advisories if USEPA recommendations were followed. One outcome of the present study may be to stimulate discussion between scientists and policy makers at the federal and state levels about appropriate screening values to protect the public from the health hazards of consuming MeHg-contaminated game fish.

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National hydrography dataset--linear referencing

Cited by 16 publications

References 0 publications

Similarity of climate control on base flow and perennial stream density in the Budyko framework

Similarity of climate control on base flow and perennial stream density in the Budyko framework

Science and policy integration issues for stream and wetland jurisdictional determinations in a semi-arid region of the western U.S.

Disparity between state fish consumption advisory systems for methylmercury and US Environmental Protection Agency recommendations: A case study of the south central United States

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