(SGER) Compilation of Hydrometeorological Data for the 1993 Flood

小行星9412460 1993年密西西比河上游流域的洪水从几个角度来看都是一个独特的事件。 它被列为有记录以来最严重的夏季洪水，圣路易斯的合并流量达到 500年一遇的洪水水位 这个流域通常在春季出现洪水，1993年3月至4月确实发生了春季洪水。 然而，从5月中旬到8月下旬，持续的大范围降雨使密苏里州和密西西比河及其主要支流陷入极端洪水。 夏季的情况是独特的，因为这两条河的洪水持续时间很长，在许多地方持续了两个月到三个月。 洪水覆盖了大片地区，并造成了美国历史上最严重的自然灾害之一。 这个项目的主要活动将是收集1992年中至1993年期间与水灾有关的所有现有数据。 这将包括降雨量、河流流量、水库水位（包括溢洪道排放）、地下水位、河流水质和地下水质的数据。 我们会制作一个数码格式的“洪水数据档案”。 无法充分数字化的数据将予以保留，并以硬拷贝形式提供。 这一数据库将提供给所有感兴趣的科学家和其他需要复制品的人，只收取象征性费用。 该档案将在科学期刊、相关行业期刊和政府相关出版物上广泛宣传。 如果感兴趣的联邦机构，如美国地质调查局和美国环保局希望帮助分发所创建的档案，将作出这些安排。

9412460 Changnon The 1993 flood on the Upper Mississippi River Basin was a singular event from several perspectives. It ranked as the worst recorded summer season flood with the combined flow at St. Louis achieving a flood level rated as a once in 500-year event. This basin, which typically experiences flood levels in the spring, indeed had spring floods in March-April 1993. However, continuous widespread rains from mid-May through late August brought both the Missouri and Mississippi Rivers and their major tributaries into extreme flooding. The summer season aspect was unique, as was the prolonged nature of the flood on both rivers, lasting between two months and three months at many locations. The floods covered an enormous area and produced one for of the worst natural disasters in the history of the United States. The primary activity of this project will be the collection of all available data related to the floods from mid-1992 through 1993. This will include data on rainfall, stream1flow, water levels in reservoirs including spillway discharges ground water levels, stream water quality, and ground water quality. We will produce a "flood data archive" in digital format. Data that cannot be adequately digitized will be retained and made available in hard copy formats. This database will be made available to all interested scientists and others who desire copies at nominal costs. The archive will be widely advertised in scientific journals, relevant trade journals, and in government-related publications. If interested federal agencies such as the USGS and USEPA wish to help in the distribution of the archive created, these arrangements will be made.