MASSGIS

FEMA Q3 Flood
Location: Rotch Library - GIS Collection | DVDROM G3701.C32 1998.U5
Developed by electronically scanning the current effective map panels of existing paper Flood Insurance Rate Maps (FIRMs). Q3 Flood Data captures certain key features from the existing paper FIRMs. These features include:

* 100-year and 500-year (1% and 0.2% annual chance) floodplain areas, including Zone V areas, certain floodway areas (when present on the FIRM), and zone designations
* Coastal Barrier Resources Act (COBRA) areas
* Political areas, including community identification number
* FIRM panel areas, including panel number and suffix
* U.S. Geological Survey (USGS) 1:24,000 scale topographic quadrangle corner points and neatlines

Also available on the web for MA through MASSGIS

USGS: Water Resources of the US - water-resources data collected at approximately 1.5 million sites throughout the Nation for:

* Real-Time
* Surface Water
* Ground Water
* Water Quality
* Site Inventory

USGS: Water Resources Maps and GIS Information

National Hydrography Dataset - The National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs and wells. Within the NHD, surface water features are combined to form "reaches," which provide the framework for linking water-related data to the NHD surface water drainage network. These linkages enable the analysis and display of these water-related data in upstream and downstream order. While initially based on 1:100,000-scale data, the NHD is designed to incorporate and encourage the development of higher resolution data required by many users.

ESRI Data and Maps
Location: Rotch Library - GIS Collection |CDROM G70.212.E776 2006 and on the MIT Geodata Repository, try a keyword = water search.
USA - generalized lakes, rivers, streams, water bodies, and drainage systems
World - generalized lakes, rivers, and drainage systems

Global GIS

HYDRO1k- HYDRO1k is a geographic database developed to provide comprehensive and consistent global coverage of topographically derived data sets, including streams, drainage basins and ancillary layers derived from the USGS' 30 arc-second digital elevation model of the world (GTOPO30).