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Aquatic Core Network and Buffers
These datasets represent aquatic cores and aquatic buffers, in combination with terrestrial cores and connectors they spatially represent the ecological network derived from the CTR LCD project. Data included in this download include: River and Stream Cores, Lake and Pond Cores, Aquatic Buffers (raster), and River and Stream Network (Stream Classes, The Nature Conservancy). River and Stream cores represent: 1) streams of relatively high ecological integrity across all lotic ecosystem types, emphasizing rivers and streams that are relatively intact and resilient to environmental changes. 2) headwater streams of relatively high current habitat value for brook trout, emphasizing streams that provide the best habitat conditions under current climate conditions; and 3) large and medium rivers that provide habitat for anadromous fish, including the portions of the main-stem and major tributaries of the Connecticut River from the mouth of the river upstream to the limit of passability for 5 additional fish species. Lake and Pond cores represent: lakes and ponds of relatively high ecological integrity, emphasizing lakes and ponds that are relatively intact and resilient to environmental changes due to their size and connectivity to similar natural environments. Aquatic Buffers spatially represent the areas estimated to have a strong influence on the integrity of the aquatic cores based on watershed processes. Specifically, the buffers represent areas hydrologically connected to the aquatic cores through surface runoff and instream flow processes, such that anthropogenic stressors within the buffers are likely to adversely impact the integrity of the aquatic cores. Unlike the cores the buffers do not necessarily represent areas of high ecological integrity. River and Stream Network is a classified version of the stream network in which streams are classified and mapped along centerlines, even through wetlands and lake and pond systems. This layer is provided for the sole purpose of facilitating the display and mapping of landscape design products, as it is easier to visualize vector features for narrow linear features.
Aquatic design products
Photo Credit: Dave Govatski
Connect the Connecticut
 
Northatlantic Connect the Connecticut
Connect the Connecticut is a collaborative effort to identify shared priorities for conserving the Connecticut River Watershed for future generations, considering the value of fish and wildlife species and the natural ecosystems they inhabit.
Coastal and Marine
 
Salinity, Northeast U.S.
The presence of salt water is an important determinant of ecological communities. This dataset modifies the Northeast Terrestrial Habitat Map developed by The Nature Conservancy to denote the presence of salt water or brackish water as follows: -Wetlands and waters classified by the National Wetland Inventory (http://www.fws.gov/wetlands/) as "marine", plus additional ocean waters to a distance from the coast of 10 km, are considered salt water and assigned a value of "1" -Wetlands and waters classified by the National Wetland Inventory as "upper estuarine" are considered oligohaline and assigned a value of "0.5" -Wetlands and waters classified by the National Wetland Inventory as "estuarine" are considered brackish and assigned a value of "0.7" -All other areas, both terrestrial and aquatic, are assigned a value of "0"
Marine Bird Mapping and Assessment
This project is a collection of data, the download includes: the annual probability of observing one individual, the annual probability of encountering a large flock, and the monthly probability of observing one individual, for the full set of 24 marine bird species (in .csv format), and the associated report “Mapping the distribution, abundance and risk assessment of marine birds in the Northwest Atlantic.” NOTE* The Data Basin link takes you to the "Coastal and Marine" gallery, see the "Marine Bird Assessment" folder to view the species data.
Northatlantic Coastal and Marine
Coastal and marine data sets
Climate
 
Average November-March Snow Depth (mm), Northeast
This dataset represents a 5 year average, November to March 2007/2008 - 2011/2012, snow depth in millimeters. This data set contains output from the NOAA National Weather Service's National Operational Hydrologic Remote Sensing Center (NOHRSC) SNOw Data Assimilation System (SNODAS). SNODAS is a modeling and data assimilation system developed by NOHRSC to provide the best possible estimates of snow cover and associated parameters to support hydrologic modeling and analysis. The aim of SNODAS is to provide a physically consistent framework to integrate snow data from satellite, airborne platforms, and ground stations with model estimates of snow cover (Carroll et al. 2001). SNODAS includes procedures to ingest and downscale output from the Numerical Weather Prediction (NWP) models, and to simulate snowcover using a physically based, spatially-distributed energy- and mass-balance snow model. SNODAS also includes procedures to assimilate satellite-derived, airborne, and ground-based observations of snow covered area and Snow Water Equivalent (SWE).
Northatlantic Climate
Climate related data sets
Aquatic
 
Hydrography High Resolution, 1:24,000, Northeast
Hydrography represents stream centerlines and off centerlines with greater than 30 hectare flow accumulation for the Northeast region. The purpose of this dataset is to improve the National Hydrography Dataset (NHD) for the Northeast region. The NHD is a national framework for assigning reach addresses to water-related entities, such as industrial discharges, drinking water supplies, fish habitat areas, wild and scenic rivers. Once linked by reach addresses, the upstream/downstream relationships of these water-related entities can be analyzed.
Northatlantic Aquatic
Freshwater and aquatic data sets
Assessing Regional Habitat Condition for Aquatic Resources in the Southeastern U.S.
 
Large Woody Debris Habitat Improvement in tribs to North Sylamore Creek (AR)
This project will improve the habitat in tributaries leading to North Sylamore Creek (Arkansas) through the addition of large woody debris.
Stream Bank & Riparian Restoration along the Wild and Scenic Cossatot River on the Ouachita NF
Six riparian sites have severe erosion from loss of riparian vegetation and heavy recreational use. Riparian habitat function will be restored by stabilizing stream banks and planting vegetation. Stream habitat cover will increase with addition of materials to repair stream banks. Campsites will be designated and hardened. To measure effectiveness, water samples taken every 3 months over the past 4 years will continue for at least the next 4 years by the Cossatot River Watch Stream Team to compare pre- and post-restoration.
Restoration of a backwater of the Arkansas River, Rector Chute
The Rector Chute backwater will be restored to prevent conversion of aquatic habitat to terrestrial habitat through sedimentation. Select areas will be dredged with a Mudcat hydraulic dredge.
North Peninsula State Park Saltmarsh Restoration
This project will create a healthy, productive saltmarsh habitat (9 acres, including complete restoration of 2 acres of historical marsh habitat filled with spoil as a result of dredge activities and enhancement of 7 acres of saltmarsh) in North Peninsula State Park, Volusia County, Florida.
Ulele Springs Restoration Project
This project, run by the Ecosphere Restoration Institute, Inc, will create a natural spring and restore native wetland vegetation within the state of Florida.