All maps and data presented here are borrowed from the US Environmental Protection Agency's Draft Programmatic Environmental Impact Statement (EIS) first released on May 29, 2003.
A link is provided below for access to the document's full text. To read more about these maps, source data and methodology please refer to EIS Chapter 3, Page III-K-12 and after: Trends in Valley Fills (link below).

For the period 1985 to 1999 a total of 5,858 valley fills were approved in the study area. These fills covered a total of 75,072 acres (30,028 ha) of land, and are estimated to have impacted on a total of 373,187 acres (149,275 ha) of watershed. A total of 562.6 miles of stream channel are estimated to have been filled by valley fills. However other estimates of valley fills give much higher values, up to 1000 miles approximately.

For a summary of information on the impact of MTR mining in the study area, as presented in the Draft Programmatic Environmental Impact Statement please refer to the document: Mountaintop Mining to Claim Another 400,000 acres of Appalachia in this website (link provided below in contextual navigation box).

Some facts about MTR mining in Kentucky (source: EIS):

For the period 1985 to 2001 4137 valley fills were approved on 961 surface mines, 738 were approved on 393 underground operations, and 120 were approved on 79 operations of other types. A total of 3117 (62 percent) of those are either constructed or may be constructed. The other 1879 valley fills will not be built because the bonds have either been released or forfeited for those permits. (EIS pages III-K-25 and 25)

Some facts about MTR mining in Tennessee (source: EIS):

During the period from 1985 through 2001, a total of 236 new permanent program permits were issued in Tennessee. Thirty-five permits were issued with 55 valley fills. A totla of 48 of those are either constructed or have the potential to be constructed. The other seven valley fills will not be built. The other 201 permits were approved without valley fills. (EIS pages III-K-26 and 27)

Some facts about MTR mining in Virginia (source: EIS):

During the period of 1985 through 2001, a total of 722 new permanent program permits were issued in Virginia. Of these 722 permits, 493 were issued without valley fills, and 229 were issued with 500 valley fills. Three Hundred and thirty valley fills were approved on 123 surface mines, 45 were approved on 39 underground operations, and 125 were approved on 74 operations of other types. A total of 465 (93 percent) of the 500 approved valley fills are either constructed or may be constructed. The other 35 valley fills will not be built because the bond has either been released or forfeited for those permits.(EIS pages III-K-28 and 29)

Some facts about MTR mining in West Virginia (source: EIS):

During the period from 1985 through 2001, a total of 2,639 new permanent program permits were issued in West Virginia. Three hundred and forty two (342) permits were issued with 1147 valley fills. A total of 856 (75 percent) of the 1147 of the approved valley fills are either constructed or may be constructed. The other 291 valley fills will not be built because the bonds have either been released or forfeited for those permits.(EIS pages III-K-30 and 31)

Geologic Extent of Remaining Mountaintop-Minable Coal in the EIS Study Area
This map shows the location and extent of coal seams that could be surface mined. Due to factors such as the consistency of the coal bed, thickness, stripping ratio, coal quality, size of coal reserve block, and other factors used in site specific mining feasibility analysis, the areas that will actually be mined will likely be much smaller than the extent of the seam shown. (EIS pages III-O-1 to III-O-3)

The future extent of valley fills
The total direct stream impact from valley fill footprints for the EIS study area for the period 1985 to 2001 is 724 miles, or 1.2 % of the miles of streams within the study area . If valley fill construction continued at this historical rate documented in the Fill Inventory for the next seventeen years (2003-2020), an additional 724 miles (for a total of 2.4%) could be impacted (EIS page IV.B-2).

While these proportions of total stream mileage might appear small, it is important to note that valley fills are located almost exclusively in stream headwaters. The specific biological processes that occur in these headwaters have a direct impact on both wildlife and water quality downstream. Thus the total stream length impacted by valley fills is much larger than the basic figures given above (for additional information refer to EIS pages IV.B-2 to IV.B-6 and chapter III.D).

The future impacts to the forest environment (vegetation and soils)
During the period 1992 to 2002 a total of 380,547 acres or 3.4 % of the forest area that existed in 1992 was impacted. When adding past, present and future terrestrial disturbance, the study area estimated forest impact is 1,408,372 acres which equates to 11.5% of the study area. However these figures most likely overestimate the impacts to forest cover in the EIS study area, in particular because of the assumption that the entire area within the permit boundary would be disturbed (EIS section IV.C).