Freshwater Water Monitoring Stations and Treaties-Mauritania

<font size='2'><span style='line-height: 1.3846153846153846;'>This map highlights 8962 stations with monthly discharge
data, including data derived daily up to 20 December 2013. The GRDB (Global Runoff DataBase) is built on
an initial dataset collected in the early 1980s from the responses to WMO
(World Meteorological Organization request to its member countries to provide a
global hydrological data set to complement a specific set of atmospheric data
in the framework of the First Global GARP Experiment (FCGE).</span><span style='line-height: 115%; color: rgb(32, 32, 32); background-color: white;'> </span><span style='line-height: 1.3846153846153846;'>The initial dataset of monthly river
discharge data over a period of several years around 1980 was supplemented with
the UNESCO monthly river discharge data collection 1965-85. Today the
database comprises discharge data of nearly 9.000 gauging stations from all
over the world. Since 1993 the total number of station-years has increased by a
factor of around 10.</span></font><p></p><div><font size='2'><br /></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'><b><u>Credits and partnerships:</u></b></span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>OSU - College of Earth, Ocean and Atmospheric Sciences</span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>Carniege </span>Corporation<span style='line-height: 1.3846153846153846;'> of New YGloabl ork</span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>NASCE - Northwest Alliance for Computational Science &amp; Engineering</span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>International Water Management Institute</span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>UNESCO - United Nations Educational, Scientific and Cultural Organisation</span></font></div><div><font size='2'><span style='line-height: 1.3846153846153846;'>USGS - United States Geological Survey</span></font></div>

本地图标注了8962个具备月径流量观测数据的水文测站，其中部分数据为逐日观测序列，更新至2013年12月20日。全球径流量数据库（Global Runoff DataBase, GRDB）的构建基础为1980年代早期收集的初始数据集，该数据集源自世界气象组织（World Meteorological Organization, WMO）向成员国发出的征集请求：请各国提供全球水文数据集，以补充第一次全球大气研究计划（First Global GARP Experiment, FCGE）框架下的专属大气数据集。
1980年前后数年的初始月河流径流量数据集，还补充了联合国教育、科学及文化组织（United Nations Educational, Scientific and Cultural Organisation, UNESCO）1965年至1985年收集的月河流径流量数据集。当前，该数据库已收录来自全球各地近9000个水文测站的径流量数据。自1993年以来，站年总数据量增长了约10倍。

致谢与合作机构：
OSU - 地球、海洋与大气科学学院
卡内基基金会（纽约）
NASCE - 西北计算科学与工程联盟
国际水资源管理研究所
联合国教育、科学及文化组织（UNESCO）
美国地质调查局（United States Geological Survey, USGS）