Peer Reviewed Publications (2011-2015)

These are links to the peer reviewed publications related to USA/Mexico water

2015

Oct 31, 2015

Status of marsh birds in the wetlands of the Colorado River delta, Mexico

-Knight, J.

Populations of secretive marsh birds (Rallidae and Ardeidae) have declined in North America in the last decades. Despite drastic habitat changes, the Colorado River delta supports four species of protected marsh birds: California Black Rail, Virginia Rail, Least Bittern, and Yuma Clapper Rail. Our goal was to assess the status(2010–2011)and detect population changes(1999-2011)of marsh birds in the Colorado River delta. This effort was focused on the Cienega de Santa Clara and the recent disturbance events that occurred in this wetland (changes in inflows, dredging, and wildfires), but included other areas of the delta as well. The Cienega provides critical habitat for the four species, with an estimated abundance of 405 California BlackRails, 7152 Virginia Rails, 8652 Least Bitterns, and 8642 Yuma Clapper Rails.

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Oct 15, 2015

Estrategia regional para la evaluación y gestión de los sistemas acuíferos transfronterizos en las Américas. Regional Strategy for the Assessment and Management of the Transboundary Aquifer Systems in the Americas

Edition: UNESCO Serie ISARM Américas, No 4Publisher: Oficina Regional de Ciencia para América Latina y el Caribe de la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (UNESCO) – Programa Hidrológico Internacional (PHI) y por el Departamento de Desarrollo Sostenible (DDS) de laEditor: Alfonso RiveraISBN: ISBN-978-92-9089-196-3

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Oct 15, 2015

Use of an integrated hydrologic model to assess the effects of pumping on streamflow in the Lower Rio Grande

Knight, Jacob

Irrigation practices in the Rincon Valley and Mesilla Basin of the Lower Rio Grande have evolved over the last century into a complex set of transboundary conjunctive use. Three major water users have surface and groundwater appropriation rights regulated by compact, treaty, and operating rules and agreements. The analysis of complex relationships between supply/demand components and the effects of surface-water and groundwater use requires an integrated hydrologic model to track all of the use and movement of water. Models previously developed for the region relied on a priori estimates of net irrigation flux or externally-calculated landscape water budgets. 

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Oct 15, 2015

Regional Strategy for the Assessment and Management of Transboundary Aquifer Systems (TAS) in the Americas. A UNESCO publication in Spanish.

Rivera, A., ed. 2015. Regional Strategy for the Assessment and Management of Transboundary Aquifer Systems (TAS) in the Americas. A UNESCO publication in Spanish. UNESCO/OEA–ISARM AMERICAS Book IV, 205p., UNESCO, Paris, France, ISBN 978-92-9089-1963

https://unesdoc.unesco.org/ark:/48223/pf0000235394?posInSet=7&queryId=32a47d34-c6c2-47d0-bc1c-6a9756cb7847

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2014

Jun 5, 2014

Potential Human Health Risk by Metal(loid)s, U and Po due to Consumption of Fish from the “Luis L. Leon” Reservoir (Northern México)

Concentrations of As, Cu, Fe, Hg, Pb and Zn and activity concentrations from U and Po in water, fillet, liver and gills were determined in three stocked fish species from the Luis L. Leon reservoir, located in Northern Mexico

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Apr 7, 2014

Irrigation efficiency and water-policy implications for river basin resilience

Lankford et al. A scale-based framework to understand the promises, pitfalls and paradoxes of irrigation efficiency to meet major water challenges. Global Environmental Change. This refers to some previous work: Scott, C.A., S. Vicuña, I. Blanco-Gutiérrez, F. Meza, C. Varela-Ortega. 2014. Irrigation efficiency and water-policy implications for river-basin resilience. Hydrology and Earth System Sciences 18: 1339–1348, doi: 10.5194/hess-18-1339-2014

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2013

Jun 30, 2013

Evaluating on-farm irrigation efficiency across the watershed—A case study of New Mexico’s Lower Rio Grande Basin: Agricultural Water Management, v. 124, p. 52–57

-Ahadi, R., Samani, Z., and Skaggs, R., 2013

Ahadi, R., Samani, Z., and Skaggs, R., 2013, Evaluating on-farm irrigation efficiency across the watershed—A case study of New Mexico’s Lower Rio Grande Basin: Agricultural Water Management, v. 124, p. 52–57

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Jun 6, 2013

Integrated Hydrologic Modeling of a Transboundary Aquifer System — Lower Rio Grande: MODFLOW and More 2013: Translating Science into Practice, Golden,

Hanson, R.T., Schmid, Wolfgang, Knight, Jake, and Maddock III, T., 2013, Integrated Hydrologic Modeling of a Transboundary Aquifer System — Lower Rio Grande: MODFLOW and More 2013: Translating Science into Practice, Golden, CO, June 2-6, 2013, 5p.

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May 15, 2013

Transboundary governance of the Nile RiverBasin: Past, present and future

-Richard K. Paisley, Taylor W. Henshaw

Transboundary waters face a multiplicity of governance chal-lenges. Transboundary waters are water resources that are sharedby two or more sovereign states, and include internationalfreshwater, international groundwater and international LargeMarine Ecosystems (LMEs)

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2012

Feb 29, 2012

Effect of elevation resolution on evapotranspiration simulations using MODFLOW: Ground Water

Kambhammettu, B.V.N.P., Schmid, W., King, J.P., and Creel, B.J., 2012

Kambhammettu, B.V.N.P., Schmid, W., King, J.P., and Creel, B.J., 2012, Effect of elevation resolution on evapotranspiration simulations using MODFLOW: Ground Water, v. 50, no. 3, p. 367–375, 

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Feb 28, 2012

A method for physically based model analysis of conjunctive use in response to potential climate changes

-Water Resources Research – 2012

Hanson, R.T., Flint, L.E., Flint, A.L., Dettinger, M.D., Faunt, C.C., Cayan, D., and, Schmid, Wolfgang, 2012, A method for physically based model analysis of conjunctive use in response to potential climate changes: Water Resources Research, Vol. 48, 23p., doi:10.1029/2011WR010774

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2011

Jan 23, 2011

Anthropogenic sulfate loads in the Rio Grande, New Mexico (USA)

Anna Szynkiewicza,b, James C. Witcherc, Magdalena Modelskad, David M. Borrokb, Lisa M. Pratt

The sources of SO4along a ~550 km stretch of the Rio Grande in New Mexico and western Texas wereinvestigated using stable S isotopes. During 2007 and 2008, theδ34S of dissolved SO4in the Rio Grande surfacewater varied over a narrow range from−1.6 to +0.9‰, which was consistent with theδ34S of local fertilizers(−2.1 to +1.6‰) and was not consistent with Paleozoic evaporite sources of SO4in regional bedrock (+7.6to +12.9‰). This is likely due the fact that SO4is the major component of N–P–K fertilizers used in the RioGrande Valley, constituting about half of the total fertilizers by mass. The SO4/Cl ratios of the groundwatersystem are relatively low (0.06 to 3) compared to the fertilizer source, suggesting that more Cl is added to theRio Grande from geological sources as compared to SO4. In the Mesilla Basin in southern New Mexico, weidentified zones of mixing between recharging irrigation water with groundwater within the depth range of~50–200 m below the ground surface. For this aquifer, Principal Component Analysis (PCA) indicated thatNa–K–Cl concentrations were largely attributable to geological sources and SO4–Mg–Ca concentrations toanthropogenic sources. Here, an additional anthropogenic source of SO4(with aδ34Sof−2.7‰) was linked toanaerobic decomposition of manure on a horse farm. In this case SO4concentrations (800 mg/L) increased byabout three times compared to background SO4concentrations in groundwater (b300 mg/L). Because of thecommon application of H2SO4in fertilizer manufacturing, anthropogenic SO4fluxes to rivers and shallowaquifers from irrigation waters can be significant worldwide.

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