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Instream Limestone Sand Dosing in the Allegheny Plateau
 

Instream Limestone Sand Dosing in the Allegheny Plateau

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Scott Alexander with Malcolm Crittenden and Robert Ryder, PA Department of Environmental Protection (DEP), “Instream Limestone Sand Dosing in the Allegheny Plateau” ...

Scott Alexander with Malcolm Crittenden and Robert Ryder, PA Department of Environmental Protection (DEP), “Instream Limestone Sand Dosing in the Allegheny Plateau”

Attendees will learn of the successful recovery of trout populations in low-buffered,
acidic streams by the use of alkaline treatments. Documented low-cost/long term trout restoration methods such as (ILS) may be useful for other watersheds dealing with stream acidification because several high cost alternatives have been proposed in Pennsylvania which on analysis may deliver far less stream-alkalinity per dollar.

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    Instream Limestone Sand Dosing in the Allegheny Plateau Instream Limestone Sand Dosing in the Allegheny Plateau Presentation Transcript

    • Downstream Upstream The biologically diverse stream segment is the component of the watershed, that under the normal range of conditions of consistent annual flow, alkaline buffering and stabile habitat, a diverse community of uni / semivoltine taxa and other macroinvertebrates, are established and biologically productive, providing the building blocks of aquatic ecologic systems. Diverse community of long-lived macroinvertebrates Biologically Diverse Biologically Variable Upland Spring Stream Segment Stream Segment and Seeps
    • Isers Run (Ideal/ ATI Ref.) Cranberry Run (Watershed Reference) Optimal Watershed Reference (Average of Ideal/ATI Reference And Watershed Reference) SP7 Each candidate site will be compared to: 1. Past to Current 2. “Non-Impaired” Watershed Reference 3. Optimal Watershed Reference 4. Ideal/ATI Reference SP9 LF10
    • “Tipping Point” for Laurel Falls Run In the Headwaters, at Site SP7 Date pH Alk Acidity (su) (mg/l) (mg/l) 6/21/2007 4.60 6.6 16.6 9/30/2009 4.70 5.0 17.0 12/19/2009 4.90 1.5 7.0 3/22/2010 4.80 1.8 9.0 6/23/2010 4.60 1.5 12.5 10/4/2010 4.50 0.5 13.3 Limestone sand dosing started 6/1/2011 6.30 6.0 5.2 10/15/2011 6.20 13.3 0.3 5/2/2012 6.80 9.3 6.8 12/20/2012 6.90 8.0 8.1 3/14/2013 6.90 8.9 -0.4 Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv. (> U/SV)(> U/SV)(>U/SV) (FATI)(“”, PR)(“”, FFG) (20) (10) (10) 12/5/2010 7 3 1 2 #15 41 8 15 CRI-ACD Qual. Bio. Score 12/8/2011 7 3 1 2 #32 36 8 14 CRI-ACD QBS - No major Qualitative change in Indicators of Com. Reestablishment compared to Historical Reference - No change in Tot. Taxa Rich. - No change in overall CRI-ACD Taxa - No change in PRM-CRI-ACD of Pred. Taxa - No change in 2nd-CRI-ACD of all other Functional Feeding Group Taxa
    • Biotracker for Laurel Falls Run In the Headwaters, at Site SP7 Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv. 12/5/2010 7 3 1 2 #15 41 8 15 CRI-ACD Site SP7 (before dz.) Qual. Bio. - low taxa/abundance Score 12/8/2011 7 3 1 2 #32 36 8 14 CRI-ACD Site SP7 (after dz.) QBS - cont. low taxa/abundance after 1 year 12/5/2011 14 7 4 3 #74 62 18 22 CRI-ACD (Expect? 8-14 4-7 2-4 3) QBS Cranberry Run (“Non-impaired” Watershed Ref.) (Expect? 15-18 8-10 4 4-6 #75-180) (101+62)/2= CRI-ACD 81.5 QBS Optimal Watershed Reference 10/10/2007 18 10 4 6 #180 101 27 35 CRI-ACD QBS Isers Run (Ideal/ATI Reference)
    • Isers Run (Ideal/ ATI Ref.) Cranberry Run (Watershed Reference) Optimal Watershed Reference (Average of Ideal/ATI Reference And Watershed Reference) SP7 Each candidate site will be compared to: 1. Past to Current 2. “Non-Impaired” Watershed Reference 3. Optimal Watershed Reference 4. Ideal/ATI Reference SP9 LF10
    • “Tipping Point” for Elklick Creek mid-stream, at Site SP9 Date pH Alk Acidity (su) (mg/l) (mg/l) 6/21/2007 4.60 6.0 32.0 4/8/2009 4.80 6.4 4.4 12/11/2009 5.10 1.8 57.7 3/22/2010 4.80 1.5 10.2 5/20/2010 4.90 2.0 14.5 10/4/2010 6.10 0.0 8.2 Limestone sand dosing started 8/2/2011 6.10 7.3 5.0 5/2/2012 6.60 7.5 6.0 9/11/2012 6.80 10.3 16.4 3/14/2013 6.50 6.0 1.2 Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv 12/19/2007 3 2 1 1 #3 26 10 5 CRI-ACD SCORE 12/5/2011 11 5 2 3 #38 65 17 22 CRI-ACD SCORE
    • Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv. 12/19/2007 3 2 1 1 #3 26 10 5 CRI-ACD Site SP9 (before dz.) Qual. Bio. - low taxa/abundance Score 12/8/2011 11 5 2 3 #38 65 17 22 CRI-ACD Site SP9 (after dz.) QBS - large improvement in taxa/abundance (Expect? 15-18 8-10 4 4-6 #75-180) (101+62)/2= CRI-ACD 81.5 QBS Optimal Watershed Reference 10/10/2007 18 10 4 6 #180 101 27 35 CRI-ACD QBS Isers Run (Ideal/ATI Reference) 4/12/12 - No Fish 12/5/2011 14 7 4 3 #74 62 18 22 CRI-ACD (Expect? 8-14 4-7 2-4 3) QBS Cranberry Run (“Non-impaired” Watershed Ref.) Biotracker for Laurel Falls Run mid-stream, at Site SP9 7/24/13 - > 14 Brookies (3”) (200-300 placed 5/26) - 10 Blacknose Dace Fish Survey Update 4/12/12 - 2 Stocked Brookies (7-8”) - 8 Blacknose Dace - 11 Creek Chub - 3 Mottled Sculpin - 4 White Suckers Cranberry Run SP9, mid-stream
    • Isers Run (Ideal/ ATI Ref.) Cranberry Run (Watershed Reference) Optimal Watershed Reference (Average of Ideal/ATI Reference And Watershed Reference) SP7 Each candidate site will be compared to: 1. Past to Current 2. “Non-Impaired” Watershed Reference 3. Optimal Watershed Reference 4. Ideal/ATI Reference SP9 LF10
    • “Tipping Point” for Laurel Falls Run at the Mouth, at Site LF10 Date pH Alk Acidity (su) (mg/l) (mg/l) 4/8/2009 5.20 7.2 4.8 4/18/2010 5.50 0.4 7.6 Limestone sand dosing started 11/8/2010 6.80 16.6 -2.8 4/29/2011 6.20 11.2 3.0 12/5/2011 6.90 12.0 -4.8 4/12/2012 7.00 12.6 -5.8 12/3/2012 7.00 6.6 -14.8 Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv 11/8/2010 8 5 2 3 #9 50 9 22 CRI-ACD 12/5/2011 14 9 4 5 #41 98 26 38 CRI-ACD SCORE
    • Total PRM 2ND Total Taxa CRI- CRI- CRI- # Date Richness ACD ACD ACD Indiv. 11/8/2010 8 5 2 3 #9 50 9 22 CRI-ACD Site LF10 (before dz.) Qual. Bio. - low taxa/abundance Score 12/5/2011 14 9 4 5 #41 98 26 38 CRI-ACD Site LF10 (after dz.) QBS - large improvement in taxa and abundance (Expect? 15-18 8-10 4 4-6 #75-180 (101+62)/2= CRI-ACD 81.5 QBS Optimal Watershed Reference 10/10/2007 18 10 4 6 #180 101 27 35 CRI-ACD QBS Isers Run (Ideal/ATI Reference) 4/12/12 - Stocked Brookie (10”) - 11 Creek Chub 12/5/2011 14 7 4 3 #74 62 18 22 CRI-ACD (Expect? 8-14 4-7 2-4 3) QBS Cranberry Run (“Non-impaired” Watershed Ref.) Biotracker for Laurel Falls Run upstream of mouth, at Site LF10 7/24/13 - 23 Blacknose Dace - 1 Bluegill - 1 Common Shiner - 39 Creek Chub - 13 Mottled Sculpin - 1 Perch - 4 White Suckers Fish Survey Update 4/12/12 - 2 Stocked Brookies (7-8”) - 8 Blacknose Dace - 11 Creek Chub - 3 Mottled Sculpin - 4 White Suckers Cranberry Run LF10 - mouth