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Nicole Gammill (Paizis)

Hydrologist for Oklahoma-Texas Water Science Center

Science and Products

Load estimation and trend analysis for nitrogen, phosphorus, and suspended sediment in the Eucha-Spavinaw drainage area, northeastern Oklahoma and northwestern Arkansas, 2011–18

Lake Eucha is a source of water for public supply and recreation for the residents of Tulsa and other municipalities in northeastern Oklahoma. Beaty Creek and Spavinaw Creek flow into Lake Eucha and drain about 388 square miles of agricultural and forested land in northeastern Oklahoma and northwestern Arkansas. Beginning in the 1990s, eutrophication of Lake Eucha characterized by excessive algal
By
Oklahoma-Texas Water Science Center, Oklahoma Water Science Center

Cimarron River alluvial aquifer hydrogeologic framework, water budget, and implications for future water availability in the Pawnee Nation Tribal jurisdictional area, Payne County, Oklahoma, 2016–18

The Cimarron River is a free-flowing river and is a major source of water as it flows across Oklahoma. Increased demand for water resources within the Cimarron River alluvial aquifer in north-central Oklahoma (primarily in Payne County) has led to increases in groundwater withdrawals for agriculture, public, irrigation, industrial, and domestic supply purposes. The Pawnee Nation of Oklahoma (Pawne
By
Oklahoma Water Science Center, Oklahoma-Texas Water Science Center

Hydrogeology and model-simulated groundwater availability in the Salt Fork Red River aquifer, southwestern Oklahoma, 1980–2015

The 1973 Oklahoma Water Law (82 OK Stat § 82-1020.5) requires that the Oklahoma Water Resources Board (OWRB) conduct hydrologic investigations of the State’s groundwater basins to support a determination of the maximum annual yield for each groundwater basin (hereinafter referred to as an “aquifer”). The maximum annual yield allocated per acre of land is known as the equal-proportionate-share (EPS
By
Oklahoma Water Science Center, Oklahoma-Texas Water Science Center
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Chikaskia River at Tonkawa, OK

Tonkawa Tribe Groundwater Survey

The objective of this study is to analyze the alluvial aquifer of the Chikaskia River to determine the potential for additional groundwater resources for the Tonkawa Tribe’s water supply. This investigation will examine the depth, lithology, hydraulic properties, and general water quality of the Chikaskia River alluvial aquifer.
By
Oklahoma Water Science Center
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Tonkawa Tribe Groundwater Survey

The objective of this study is to analyze the alluvial aquifer of the Chikaskia River to determine the potential for additional groundwater resources for the Tonkawa Tribe’s water supply. This investigation will examine the depth, lithology, hydraulic properties, and general water quality of the Chikaskia River alluvial aquifer.
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Trevisan, A.R., Paizis, N.C., 2021, MODFLOW-NWT model used for the simulation of the Cimarron River Alluvial Aquifer in the Pawnee Nation Jurisdictional Area in Payne County, OK, 2016-17

A three-dimensional, finite-difference MODFLOW 2005 groundwater model using the Newton formulation solver (MODFLOW-NWT) was created for the Cimarron River alluvial aquifer in Payne County, north-central Oklahoma to assess the effects of current groundwater withdrawal rates with respect to current and future groundwater availability and on base flow in the Cimarron River. To better understand curre
By
Oklahoma-Texas Water Science Center

Science and Products