HIT 2.0 - Map

HIT Help


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Tool	Description

Map Legend:	Display the legend for the layers currently drawn on the map.

Identify:	Identify features of the Map's active layer.

Select Watersheds:	Select watersheds on the map for HIT analysis
On Map:	select watersheds interactively on the map by drawing a box around multiple watersheds or clicking once on a single watershed.
By Watershed Name or HUC:	Select Watersheds by specifying a Watershued Name or Hydroloigic Unit Code (HUC).
By address:	Select Watersheds by specifying a location.
What are my watersheds:	Provide and address, and see the various scaled watersheds at that point.

HIT Data:	Perform an analysis of sediment loading or erosion data on currently selected watersheds.

Apply Legend:	Shade selected watershed icons according to sediment or erosion data.

Label Watersheds:	Label the active watershed layer by a specified attribute.

Download:	Click on the map to download the GIS data of a HIT model for the corresponding 8-digit watershed.

Clear Map:	Clear the map of any watershed selections, labels, or identify results.

Cache description

The cache stores previously viewed map images. The first time a user views a map layer at a certain location, and at a certain map scale, the server stores the view in the cache. The next time the user, or any other user, tries to view the data layer at that location and scale, the view is recalled from the cache and displayed much faster then when the cache was built.

Legend Class description

For Equal Intervals, the range of values is divided into 4 equal increments and points are colored accordingly. In this classification scheme it would be possible for all but one of the points to have the same color.

For Quartiles, the value ranges that define the colors are set so that each color receives an equal number of points.
For example, if there are 8 points, 2 will be dark red, 2 will be red, 2 will be lighter red, etc.


Specify the details of the HIT output:

Do you want to view erosion or sediment loading data?
	Erosion
	Sediment
Are you interested in rates and/or totals?
	Rates
	Totals
Specify any BMPs you would like to evaluate:
	Use the default BMP costs per acre (based on EQIP payments), or specify your own:
	Mulch Till on Worst 5% of a Watershed
	Mulch Till on Worst 10% of a Watershed
	No Till on Worst 5% of a Watershed
	No Till on Worst 10% of a Watershed
	Grass on Worst 5% of a Watershed
	Grass on Worst 10% of a Watershed
	30ft. grass buffer (of ag land) on all streams


Specify the type of legend to apply:

Dataset:	Erosion
	Sediment Loading

Attribute:	Totals
	Rates (Tons/acre)

Classification style:	Equal Intervals
	Quartile