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City
ELEVATION_contours_2021
City of Austin —
ELEVATION.contours_2021 Summary The Texas Natural Resources Information System (TNRIS) contracted Sanborn to fly LiDAR in March of 2021. TNRIS then created the... -
State
Chesapeake Bay Contours
State of Maryland —
Bathymetry for Chesapeake Bay was derived from two hundred ninety-seven surveys containing 3,178,509 soundings. Thirty-five older, less accurate, overlapping surveys... -
State
Blue Infrastructure Watersheds
State of Maryland —
A subset of watersheds created for the Blue Infrastructure Project (BI) based on the DNR 12 digit watershes as follows; This file (SWSHED12) is a statewide digital... -
State
8 Digit Watersheds
State of Maryland —
This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate watersheds each with an 8-digit numeric code. The file was created... -
State
12 Digit Watersheds
State of Maryland —
This file (SWSHED12) is a statewide digital watershed file. It was created primarily for state and federal agency use. The watersheds define Strahler (Strahler 1952... -
State
Blue Infrastructure Watersheds
State of Maryland —
A subset of watersheds created for the Blue Infrastructure Project (BI) based on the DNR 12 digit watershes as follows; This file (SWSHED12) is a statewide digital... -
City
Aircraft Noise Climates
City of San Francisco —
A. SUMMARY San Francisco International Airport (SFO) keeps track of aircraft noise levels in communities around the airport 24/7. Measured aircraft noise events are... -
State
Ocean Shoal
State of Maryland —
These are shoal boundaries off the coast of Maryland created by the Maryland Geological Survey (MGS). No formal metadata was received, but MGS describes the data as... -
State
Ocean Shoal
State of Maryland —
These are shoal boundaries off the coast of Maryland created by the Maryland Geological Survey (MGS). No formal metadata was received, but MGS describes the data as... -
State
Federal Watersheds - HUC 11
State of Maryland —
Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic units through four levels were created in the 1970's and have... -
State
12 Digit Watersheds
State of Maryland —
This file (SWSHED12) is a statewide digital watershed file. It was created primarily for state and federal agency use. The watersheds define Strahler (Strahler 1952... -
City
Elevation Contours
City of San Francisco —
SUMMARY Elevation contours with a five-foot interval for San Francisco mainland and Treasure Island/Yerba Island. Based on San Francisco Elevation Datum. -
City
UTILITIESCOMMUNICATION_stormwater_control_drain_area
City of Austin —
Storm water control drainage areas were delineated using site plans, elevation contours, aerial photos, and drainage infrastructure GIS. These areas are used in land... -
State
Ocean Contours
State of Maryland —
These data represent the results of data collection/processing for a specific Department of Natural Resources, Maryland Geological Survey activity and indicate... -
City
GEOSCIENTIFICINFORMATION.ed_aq_contribute_zone
City of Austin —
This layer represents the boundaires of watersheds which have a contributing impact on the Edwards Aquifer.The Edwards Aquifer contributing zones polygon file was... -
State
Federal Watersheds - HUC 11
State of Maryland —
Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic units through four levels were created in the 1970's and have... -
State
8 Digit Watersheds
State of Maryland —
This file (SWSUB8) is a statewide digital watershed file. It depicts the State with 138 separate watersheds each with an 8-digit numeric code. The file was created...