مورد إلكتروني
Preliminary Hydrologic Investigation of Topock Marsh, Arizona 1995-98.
| العنوان: | Preliminary Hydrologic Investigation of Topock Marsh, Arizona 1995-98. |
|---|---|
| المؤلفون: | Reid, C. P. P., Havorson, William L., Hawkins, Richard H., Long, Austin, Guay, Bradley Evan. |
| بيانات النشر: | The University of Arizona. 2001 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | A preliminary hydrologic investigation of Topock Marsh, located in northwestern Arizona, was conducted for the U.S. Fish and Wildlife Service between 1995 and 1998. The study identified the hydrological components of the marsh system, quantified an annual water budget, defined the water quality conditions of the open-water marsh, examined water management concerns, and provided data for a concurrent submersed aquatic vegetation (SAV) study. The water budget tabulated monthly values for all hydrologic components except net ground-water flow, which was determined by difference. The principal components were river inflow (+60,020 ± 1,020 ac-f1), rainfall (+890 ± 40 ac-f1), evapotranspiration (-28,170 ± 940 ac-fl), storage (-980 ± 30) and marsh outflow (-26,860 ± 890 ac-f1). The net ground-water value (-6,960 ± 1,650 ac-f1) suggests that the marsh recharges ground-water. The Refuge also exceeded its diversion and consumptive use entitlement. Water quality conditions were assessed using continuous and discrete sampling methods. Three in-situ devices measured routine water quality parameters (temperature, pH, conductivity, dissolved oxygen, oxidation-reduction potential) for two years. Quarterly water samples (1997-98) from four marsh sites were analyzed for major and select minor ions, and δ¹⁸O- δD values. The continuously monitored parameters exhibited, to varying degrees, temporal (diurnal and seasonal) and spatial variability. The marsh was well mixed and has oxygen levels capable of supporting most aquatic life. Evaporative concentration was the major process controlling major ion chemistry. Isotope data confirmed that the marsh and nearby shallow ground-water derive from a river-water source. The marsh is normally turbid (30 NTU), apparently resulting from the resuspension of detrital material by wind-generated waves. The turbidity values dropped below 5 NTU during the 1996 summer as dense patches of SAV "filtered" the water. Light penetration is probably a limiting |
| مصطلحات الفهرس: | Hydrology., Hydrology -- Arizona., Dissertation-Reproduction (electronic), text |
| URL: | |
| الإتاحة: | Open access content. Open access content Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. |
| أرقام أخرى: | AZU oai:repository.arizona.edu:10150/191252 221346042 1104352058 |
| المصدر المساهم: | UNIV OF ARIZONA From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1104352058 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |