TMDL Report | WATERS

TMDL ID:	40931	TMDL Name:	SWAMP CREEK (HEADWATERS TO MOUTH - FORTINE CREEK) - TOBACCO TPA SEDIMENT
State/Tribe:	Montana	TMDL Date:	09/16/2011
EPA Action:	EPA Approved	Comments:	THIS SEDIMENT TMDL IS BASED ON A % REDUCTION APPROACH BECAUSE: 1.) THERE IS NO NUMERIC STANDARD FOR SEDIMENT 2.) THE UNCERTAINTY ASSOCIATED WITH LOADS DERIVED FROM THE SOURCE ASSESSMENT 3.) % REDUCTION APPROACH IS MORE APPLICABLE FOR RESTORATION.

No TMDL Documents have been uploaded for this TMDL.

Total Waste Load Allocation:		Total Load Allocation:	1477
Explicit Margin Of Safety:		Implicit Margin Of Safety:	Y
Units for Total Waste Load Allocation and Total Load Allocation:	TONS/YEAR	TMDL Pollutant Source Type:	Nonpoint Source
TMDL End Point:	% RIFFLE SURFACE FINES < 6MM (REACH AVERAGE VIA PEBBLE COUNT)= 30¿: OR= 1.4; C: >OR= 2.7; E: >OR= 2.3 REACH AVERAGE RESIDUAL POOL DEPTH = <20' BFW: >OR= 0.8'; 20'-35' BFW: >OR= 1.2'; >35' BFW: >OR= 1.6' POOLS/MILE = <20' BFW: >OR= 75; 20'-35' BFW: >OR= 42; >35' BFW: >OR= 31; TOBACCO RIVER: >OR= 12 LWD/MILE = <20' BFW: >OR= 359; 20'-35' BFW: >OR= 242; >35' BFW: >OR= 104 % GREENLINE SHRUB COVER (WHERE APPLICABLE) = >OR= 57% SIGNIFICANT AND CONTROLLABLE SEDIMENT SOURCES = INDICATOR OF STREAM PROBLEMS - POOR QUALITY MACROINVERTEBRATE INDICES = MOUNTAIN MMI: > 63; O/E: >OR= 0.80

Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
Listed Water Causes of Impairment for Sediment Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
MT76D004_040	SWAMP CREEK	Waterbody Map	2000, 2002	Other Habitat Alteration(s)
MT76D004_040	Swamp Creek	Waterbody Map	2006, 2008, 2010	Sedimentation/Siltation