Flow Data (Levesque)

In 1996, the U.S. Geological Survey began a 4-year study of the flow and nutrient characteristics of three major streams that drain parts of the Everglades National Park. An upward looking acoustic Doppler current profiler, a water-level sensor, and two specific conductance sensors were installed at each site. Monthly discharge measurements are made with an acoustic Doppler current profiler to develop discharge ratings. Nutrient data are collected monthly at each site. Data collected at the Broad River, Harney River, and Shark River stations include water level, water velocity, specific conductance and temperature, total and dissolved phosphorus species, pH, and dissolved oxygen. These three stations were established in 1997.

The southwest coast of Florida is part of a wilderness area with unique hydraulic characteristics that has historically been described as the "River of Grass". Flat terrain and lack of controlled topographic information has made it difficult to define drainage divides. Low gradients, coupled with tidal effects, create complex conditions under which to measure river flow. It has been almost thirty years since any effort has been made to monitor flow characteristics continuously in the area. Significant technological advancements have occurred during this time and this new technology can be applied to help obtain the information needed to make informed decisions about the future of this unique coastal area. Flow, nutrient concentrations, and nutrient load data will provide part of the basic information needed to understand the hydrologic and water-quality characteristics for a part of the southwest coast of Florida. The analysis of these measurements will help characterize the current conditions for the three sites and explain the relation between upgradient water levels and southwest coastal stream flows, and the possible interaction between southwest coastal waters and the waters of Florida Bay. The data can also be used as input to hydrodynamic and water-quality models.

SUPPLEMENTAL INFORMATION: This project is now part of the Tides and Inflows in the Mangrove Ecotone (TIME) Model Development project.

1996年，美国地质调查局（U.S. Geological Survey）启动了一项为期4年的研究，针对汇入大沼泽地国家公园（Everglades National Park）部分区域的三条主要溪流的径流与营养盐特征展开调查。各监测站点均部署了向上观测型声学多普勒流速剖面仪（acoustic Doppler current profiler）、水位传感器（water-level sensor）以及两台电导率传感器（specific conductance sensors）。研究人员每月借助声学多普勒流速剖面仪开展流量测量，以构建流量定标曲线。各站点按月同步采集营养盐数据。布罗德河（Broad River）、哈尼河（Harney River）与鲨鱼河（Shark River）三个监测站建于1997年，其采集的监测数据涵盖水位、水流流速、电导率与水温、总磷及溶解态磷形态、pH值以及溶解氧。

佛罗里达西南海岸属于具备独特水力特征的荒野区域，历史上被称作"草之河"（"River of Grass"）。该区域地势平坦，且缺乏受控地形信息，导致流域分水岭的界定工作困难重重。极低的地面坡度叠加潮汐效应，使得溪流径流的测量环境极为复杂。该区域已有近30年未开展过连续径流特征监测工作。在此期间，水文监测技术取得了显著进展，可借助这些新技术获取所需数据，为这片独特海岸区域的未来规划制定科学决策提供支撑。径流、营养盐浓度与营养盐负荷数据，将为解析佛罗里达西南海岸部分区域的水文与水质特征提供部分基础资料。对上述监测数据的分析，将有助于刻画三个监测站点的当前水文水质状况，阐明上游水位与西南海岸溪流径流之间的关联，以及西南海岸水域与佛罗里达湾（Florida Bay）水域之间可能存在的相互作用。此外，该数据集还可作为水动力模型与水质模型的输入参数。

补充说明：本项目目前隶属于红树林生态带潮汐与入流（Tides and Inflows in the Mangrove Ecotone, TIME）模型开发项目。