scholarly journals Not all breaks are equal: Variable hydrologic and geomorphic responses to intentional levee breaches along the lower Cosumnes River, California

2017 ◽  
Vol 33 (7) ◽  
pp. 1143-1155 ◽  
Author(s):  
A. L. Nichols ◽  
J. H. Viers
Keyword(s):  
Author(s):  
Eric G. Booth ◽  
◽  
Jeffrey F. Mount ◽  
Joshua H. Viers ◽  
◽  
...  

2004 ◽  
Vol 130 (4) ◽  
pp. 301-310 ◽  
Author(s):  
Jan Fleckenstein ◽  
Michael Anderson ◽  
Graham Fogg ◽  
Jeffrey Mount
Keyword(s):  

2021 ◽  
Author(s):  
Ate Visser ◽  
Laura Foglia ◽  
Helen Dahlke ◽  
Amelia Vankeuren ◽  
Maribeth Kniffin ◽  
...  

<p>While climate change will challenge the future of California’s water resources, groundwater can buffer variability in precipitation and streamflow, if managed sustainably. Enhanced river recharge is an important tool to reach sustainable groundwater management in the California Central Valley (USA). Understanding and predicting recharge rates of river water, either natural river bank infiltration or managed aquifer recharge (MAR) during floods (Flood-MAR) or on agricultural land (Ag-MAR) is essential to evaluate the sustainability of groundwater management plans. Groundwater ages, combined with other isotopic and noble gas evidence, can elucidate surface water-groundwater interactions and support river recharge rates calculations over longer time periods.</p><p>Our study is focused on the recharge from the Cosumnes River in the California Central Valley. The Cosumnes River forms the boundary between the Sacramento Valley groundwater basin to the north and the San Joaquin Valley groundwater basin to the south. For this study, 28 new samples were collected for the analysis of 3H/3He age, noble gases, and stable isotopes. 25 additional samples from the California Waterboards Groundwater Ambient Monitoring and Assessment (GAMA) Shallow Aquifer Assessment program were included, which were collected and analyzed by the USGS California Water Science Center in 2017.</p><p>We find that 28% of groundwater in the San Joaquin – Cosumnes groundwater subbasin originated as river water recharge, based on the interpolated mean δ<sup>18</sup>O (7.7 ‰ ), compared with river water (-9 ‰) and local precipitation recharge (-7 ‰) end-members. River water is a source of modern recharge, resulting in high tritium concentrations close to the Cosumnes River. In contrast, ambient groundwater from local precipitation recharge is predominantly pre-modern or fossil, containing less than 1 pCi/L tritium. Combining groundwater ages with the distance to the river, aquifer thickness, and porosity, estimates of river water recharge rate vary between 0.02 km<sup>3</sup>/yr and 0.035 km<sup>3</sup>/yr. These quantitative estimates of river water recharge will constrain the numerical groundwater flow model for this basin and aid groundwater managers in developing sustainability plans to balance groundwater pumping with recharge rates.</p>


2017 ◽  
Vol 5 (2) ◽  
pp. 73
Author(s):  
James Young

International Journal of Social Science Studies (IJSSS) would like to acknowledge the following reviewers for their assistance with peer review of manuscripts for this issue. Many authors, regardless of whether IJSSS publishes their work, appreciate the helpful feedback provided by the reviewers. Their comments and suggestions were of great help to the authors in improving the quality of their papers. Each of the reviewers listed below returned at least one review for this issue.Reviewers for Volume 5, Number 2 Abdul Azim Akhtar, Institute of Objective Studies, IndiaAgboola O. Paul, Universiti Teknologi Malaysia, MalaysiaAnastasia Panagakos, Cosumnes River College, USAAntónio Calha, Polytechnic Institute of Portalegre, PortugalBegoña Montero-Fleta, Universitat Politécnica de València, SpainE.Ozan Aksoz, Anadolu University, TurkeyEmanuele Achino, C. D. T. O., ItalyHenry Poduthas, West Texas A&M University, USAJehu Onyekwere Nnaji, University of Naples II, Italy and Globe Visions Network, ItalyK. O. Aramide, The Polytechnic Ibadan, NigeriaKatja Eman, Univerza v Mariboru, SloveniaLaura Diaconu Maxim, "Alexandru Ioan Cuza University" of Iasi, RomaniaLuigia Simona Sica, University of Naples “Federico II”, ItalyMałgorzata Haładewicz, Opole University of Technology, PolandRasa Poceviciene, Siauliai University, LithuaniaRaymond Chan, City University of Hong Kong, Hong KongSandro Serpa, University of the Azores, Portugal     James YoungEditorial AssistantOn behalf of,The Editorial Board of International Journal of Social Science StudiesRedfame Publishing9450 SW Gemini Dr. #99416Beaverton, OR 97008, USAURL: http://ijsss.redfame.com


1995 ◽  
Vol 31 (12) ◽  
pp. 399-408 ◽  
Author(s):  
R. M. Fuog ◽  
K. C. Giberson ◽  
R. L. Lawrence

Rancho Murieta is an exclusive 1,400 ha (3,500 acre) master-planned golf-course-oriented community and is located approximately 39 km (24 miles) southeast of Sacramento, the capital of California. The community located along the banks of the Cosumnes River, one of the last pristine rivers in California, is situated in the great Central Valley of California which enjoys a Mediterranean-like semi-arid climate. The community has a present population of 3,500 people and is projected to have an ultimate population of 15,600. The Rancho Murieta Community Services District provides wastewater collection treatment and disposal services, among others within the community. In the early 1980s, the District obtained 55 ha (135 acres) of land for a wastewater treatment facility from the original developer of the community. Despite the immediate proximity of the plant to the Cosumnes River, the District was not allowed to discharge any plant effluent to the river. In favor of preserving the pristine qualities of the river, a “zero discharge” was required. Therefore, the District had to provide for some form of reuse of its effluent, a land disposal alternative. After considerable study, a plan was developed to integrate the community's two proposed championship golf courses into a comprehensive wastewater reclamation program. In addition to significantly decreasing the demand for treated domestic water within the community, a comprehensive program to irrigate the golf courses with reclaimed wastewater would also significantly lower the summertime demand for water from the river, thereby providing increased flows to downstream agricultural users along the river, a true “win-win” situation for all parties concerned. In order to provide treatment to an acceptable level for irrigation of golf courses surrounded by dwellings, it was decided that a tertiary treatment plant would be designed to meet California's wastewater reclamation requirements. The current treatment plant was constructed in three phases. California has very strict standards for effluent reuse and they are described in Title 22 of the California Code of Regulations. Use of reclaimed wastewater for most golf courses requires oxidation, coagulation, filtration and disinfection. The effluent has to meet a 2 NTU turbidity and 2.2 MPN/100 coliform standard. To comply with these standards, the District developed a unique treatment process that has allowed the District to be in full compliance since start-up without a single violation of the plant's discharge requirements. The initial treatment process consists of oxidation ponds. Mechanical aerators are located on the ponds to ensure that sufficient oxygen is provided at all times for treatment and most importantly for odor control. The pond effluent is discharged into two large reservoirs. These two reservoirs are sized to store wastewater for up to 150 days during periods of non-irrigation. When irrigation can be performed on the golf course, the tertiary treatment process is activated. It consists of dissolved air flotation for algae removal, filtration for polishing, and disinfection. Treatment design parameters, effluent quality results and capital and operating costs are presented.


2019 ◽  
Vol 649 ◽  
pp. 979-994 ◽  
Author(s):  
B. Hoagland ◽  
C. Schmidt ◽  
T.A. Russo ◽  
R. Adams ◽  
J. Kaye

2004 ◽  
Vol 9 (2) ◽  
pp. 126-134 ◽  
Author(s):  
Michael L. Anderson ◽  
Z. Q. Chen ◽  
M. L. Kavvas
Keyword(s):  

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